I read through this question, and feel the best way to implement useEffect is not mentioned in the answers. Let's say you have a network call, and would like to do something once you have the response. For the sake of simplicity, let's store the network response in a state variable. One might want to use action/reducer to update the store with the network response.
const [data, setData] = useState(null);
/* This would be called on initial page load */
useEffect(()=>{
fetch(`https://www.reddit.com/r/${subreddit}.json`)
.then(data => {
setData(data);
})
.catch(err => {
/* perform error handling if desired */
});
}, [])
/* This would be called when store/state data is updated */
useEffect(()=>{
if (data) {
setPosts(data.children.map(it => {
/* do what you want */
}));
}
}, [data]);
Reference => https://reactjs.org/docs/hooks-effect.html#tip-optimizing-performance-by-skipping-effects
navigator.clipboard doesn't work over http connection according to their document. So you can check if it's coming undefined and use document.execCommand('copy') instead, this solution should cover almost all the browsers
const defaultCopySuccessMessage = 'ID copied!'
const CopyItem = (props) => {
const { copySuccessMessage = defaultCopySuccessMessage, value } = props
const [showCopySuccess, setCopySuccess] = useState(false)
function fallbackToCopy(text) {
if (window.clipboardData && window.clipboardData.setData) {
// IE specific code path to prevent textarea being shown while dialog is visible.
return window.clipboardData.setData('Text', text)
} else if (document.queryCommandSupported && document.queryCommandSupported('copy')) {
const textarea = document.createElement('textarea')
textarea.innerText = text
// const parentElement=document.querySelector(".up-CopyItem-copy-button")
const parentElement = document.getElementById('copy')
if (!parentElement) {
return
}
parentElement.appendChild(textarea)
textarea.style.position = 'fixed' // Prevent scrolling to bottom of page in MS Edge.
textarea.select()
try {
setCopySuccess(true)
document.execCommand('copy') // Security exception may be thrown by some browsers.
} catch (ex) {
console.log('Copy to clipboard failed.', ex)
return false
} finally {
parentElement.removeChild(textarea)
}
}
}
const copyID = () => {
if (!navigator.clipboard) {
fallbackToCopy(value)
return
}
navigator.clipboard.writeText(value)
setCopySuccess(true)
}
return showCopySuccess ? (
<p>{copySuccessMessage}</p>
) : (
<span id="copy">
<button onClick={copyID}>Copy Item </button>
</span>
)
}
And you can just call and reuse the component anywhere you'd like to
const Sample=()=>(
<CopyItem value="item-to-copy"/>
)
Ok, this is an old thread but.
I had a same issue, my problem was I used json.load
instead of json.loads
This way, json has no problem with loading any kind of dictionary.
json.load - Deserialize fp (a .read()-supporting text file or binary file containing a JSON document) to a Python object using this conversion table.
json.loads - Deserialize s (a str, bytes or bytearray instance containing a JSON document) to a Python object using this conversion table.
follow the python2.7 document, you have to use calendar.timegm() instead of time.mktime()
>>> d = datetime.date(2011,01,01)
>>> datetime.datetime.utcfromtimestamp(calendar.timegm(d.timetuple()))
datetime.datetime(2011, 1, 1, 0, 0)
function getEffectiveVotes($id)
According to the function header, there is only one parameter variable ($id
).
Thus, on line 27, the votes[]
array is undefined and out of scope. You need to add another
parameter value to the function header so that function getEffectiveVotes()
knows to expect two parameters. I'm rusty, but something like this would work.
function getEffectiveVotes($id, $votes)
I'm not saying this is how it should be done, but you might want to research how PHP passes its arrays and decide if you need to explicitly state to pass it by reference
function getEffectiveVotes($id &$votes) <---I forget, no time to look it up right now.
Lastly, call function getEffectiveVotes()
with both arguments wherever it is supposed to be called.
Cheers.
Use json.loads
not json.load
.
(load
loads from a file-like object, loads
from a string. So you could just as well omit the .read()
call instead.)
LD_PRELOAD
lists shared libraries with functions that override the standard set, just as /etc/ld.so.preload
does. These are implemented by the loader /lib/ld-linux.so
. If you want to override just a few selected functions, you can do this by creating an overriding object file and setting LD_PRELOAD
; the functions in this object file will override just those functions leaving others as they were.
For more information on shared libraries visit http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html
Whatever way you try above you need to test it by upload it to app connect like me to make sure it works and save your valuable time
I was using Postman to test my Laravel API.
I received an error that stated
"SQLSTATE[42S22]: Column not found: 1054 Unknown column" because Laravel was trying to automatically create two columns "created_at" and "updated_at".
I had to enter public $timestamps = false;
to my model. Then, I tested again with Postman and saw that an "id" = 0
variable was being created in my database.
I finally had to add public $incrementing false;
to fix my API.
First of all don't make the mock static. Make it a private field. Just put your setUp class in the @Before
not @BeforeClass
. It might be run a bunch, but it's cheap.
Secondly, the way you have it right now is the correct way to get a mock to return something different depending on the test.
Create dictionaries for both arrays using _.keyBy()
, merge the dictionaries, and convert the result to an array with _.values()
. In this way, the order of the arrays doesn't matter. In addition, it can also handle arrays of different length.
const ObjectId = (id) => id; // mock of ObjectId_x000D_
const arr1 = [{"member" : ObjectId("57989cbe54cf5d2ce83ff9d8"),"bank" : ObjectId("575b052ca6f66a5732749ecc"),"country" : ObjectId("575b0523a6f66a5732749ecb")},{"member" : ObjectId("57989cbe54cf5d2ce83ff9d6"),"bank" : ObjectId("575b052ca6f66a5732749ecc"),"country" : ObjectId("575b0523a6f66a5732749ecb")}];_x000D_
const arr2 = [{"member" : ObjectId("57989cbe54cf5d2ce83ff9d6"),"name" : 'xxxxxx',"age" : 25},{"member" : ObjectId("57989cbe54cf5d2ce83ff9d8"),"name" : 'yyyyyyyyyy',"age" : 26}];_x000D_
_x000D_
const merged = _(arr1) // start sequence_x000D_
.keyBy('member') // create a dictionary of the 1st array_x000D_
.merge(_.keyBy(arr2, 'member')) // create a dictionary of the 2nd array, and merge it to the 1st_x000D_
.values() // turn the combined dictionary to array_x000D_
.value(); // get the value (array) out of the sequence_x000D_
_x000D_
console.log(merged);
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.14.0/lodash.min.js"></script>
_x000D_
Using ES6 Map
Concat the arrays, and reduce the combined array to a Map. Use Object#assign to combine objects with the same member
to a new object, and store in map. Convert the map to an array with Map#values and spread:
const ObjectId = (id) => id; // mock of ObjectId_x000D_
const arr1 = [{"member" : ObjectId("57989cbe54cf5d2ce83ff9d8"),"bank" : ObjectId("575b052ca6f66a5732749ecc"),"country" : ObjectId("575b0523a6f66a5732749ecb")},{"member" : ObjectId("57989cbe54cf5d2ce83ff9d6"),"bank" : ObjectId("575b052ca6f66a5732749ecc"),"country" : ObjectId("575b0523a6f66a5732749ecb")}];_x000D_
const arr2 = [{"member" : ObjectId("57989cbe54cf5d2ce83ff9d6"),"name" : 'xxxxxx',"age" : 25},{"member" : ObjectId("57989cbe54cf5d2ce83ff9d8"),"name" : 'yyyyyyyyyy',"age" : 26}];_x000D_
_x000D_
const merged = [...arr1.concat(arr2).reduce((m, o) => _x000D_
m.set(o.member, Object.assign(m.get(o.member) || {}, o))_x000D_
, new Map()).values()];_x000D_
_x000D_
console.log(merged);
_x000D_
The situation you describe is pretty fishy. Whenever you close your program's startup form, the entire application should quit automatically, including closing all other open forms. Make sure that you're closing the correct form, and you should not experience any problems.
The other possibility is that you've changed your project (using its Properties page) not to close until all open windows have been closed. In this mode, your application will not exit until the last remaining open form has been closed. If you've chosen this setting, you have to make sure that you call the Close
method of all forms that you've shown during the course of application, not just the startup/main form.
The first setting is the default for a reason, and if you've changed it, you probably want to go fix it back.
It is by far the most intuitive model for normal applications, and it prevents exactly the situation you describe. For it to work properly, make sure that you have specified your main form as the "Startup form" (rather than a splash screen or log-in form).
The settings I'm talking about are highlighted here:
But primarily, note that you should never have to call Application.Exit
in a properly-designed application. If you find yourself having to do this in order for your program to close completely, then you are doing something wrong. Doing it is not a bad practice in itself, as long as you have a good reason. The other two answers fail to explain that, and thus I feel are incomplete at best.
I haven't used jQuery, but in a library like Prototype you can bind functions to a specific scope. So with that in mind your code would look like this:
$('#foobar').ready('click', this.doSomething.bind(this));
The bind method returns a new function that calls the original method with the scope you have specified.
.wrapper{
float: left;
width: 100%;
text-align: center;
position: relative;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.button{
display:inline-block;
}
<div class="wrapper">
<button class="button">Button1</button>
<button class="button">Button2</button>
</div>
Try this
std::string s(reinterpret_cast<const char *>(Data), Size);
I'm not sure if this would work (data could be omitted), but this may work:
*dataframe name*.tails(1)
and then using this, you could find the number of rows by running the code snippet and looking at the row number that was given to you.
DataTable.NewRow
will initialize each field to:
the default value for each DataColumn
(DataColumn.DefaultValue
)
except for auto-increment columns (DataColumn.AutoIncrement == true
), which will be initialized to the next auto-increment value.
and expression columns (DataColumn.Expression.Length > 0
) are also a special case; the default value will depend on the default values of columns on which the expression is calculated.
So you should probably be checking something like:
bool isDirty = false;
for (int i=0; i<table.Columns.Count; i++)
{
if (table.Columns[i].Expression.Length > 0) continue;
if (table.Columns[i].AutoIncrement) continue;
if (row[i] != table.Columns[i].DefaultValue) isDirty = true;
}
I'll leave the LINQ version as an exercise :)
Make sure that both the chromedriver
and google-chrome
executable have execute permissions
sudo chmod -x "/usr/bin/chromedriver"
sudo chmod -x "/usr/bin/google-chrome"
Old question, but some of us are in git-posh
(powershell). This is the solution for that:
git ls-files -ci --exclude-standard | foreach { git rm --cached $_ }
This should work with any div
or screen size:
.center-screen {_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
justify-content: center;_x000D_
align-items: center;_x000D_
text-align: center;_x000D_
min-height: 100vh;_x000D_
}
_x000D_
<html>_x000D_
<head>_x000D_
</head>_x000D_
<body>_x000D_
<div class="center-screen">_x000D_
I'm in the center_x000D_
</div>_x000D_
</body>_x000D_
</html>
_x000D_
See more details about flex
here. This should work on most of the browsers, see compatibility matrix here.
Update: If you don't want the scroll bar, make min-height
smaller, for example min-height: 95vh;
You should have to just clear sessions data thats it everything will work
I thought I would contribute by providing a concrete example of the practical use of the scale function. Say you have 3 test scores (Math, Science, and English) that you want to compare. Maybe you may even want to generate a composite score based on each of the 3 tests for each observation. Your data could look as as thus:
student_id <- seq(1,10)
math <- c(502,600,412,358,495,512,410,625,573,522)
science <- c(95,99,80,82,75,85,80,95,89,86)
english <- c(25,22,18,15,20,28,15,30,27,18)
df <- data.frame(student_id,math,science,english)
Obviously it would not make sense to compare the means of these 3 scores as the scale of the scores are vastly different. By scaling them however, you have more comparable scoring units:
z <- scale(df[,2:4],center=TRUE,scale=TRUE)
You could then use these scaled results to create a composite score. For instance, average the values and assign a grade based on the percentiles of this average. Hope this helped!
Note: I borrowed this example from the book "R In Action". It's a great book! Would definitely recommend.
The fastest way by far on MySQL is:
SHOW TABLE STATUS;
You will instantly get all your tables with the row count (which is the total) along with plenty of extra information if you want.
There is a free and easy to use PDF class to create PDF documents. It's called FPDF. In combination with FPDI (http://www.setasign.de/products/pdf-php-solutions/fpdi) it is even possible to edit PDF documents. The following code shows how to use FPDF and FPDI to fill an existing gift coupon with the user data.
require_once('fpdf.php');
require_once('fpdi.php');
$pdf = new FPDI();
$pdf->AddPage();
$pdf->setSourceFile('gift_coupon.pdf');
// import page 1
$tplIdx = $this->pdf->importPage(1);
//use the imported page and place it at point 0,0; calculate width and height
//automaticallay and ajust the page size to the size of the imported page
$this->pdf->useTemplate($tplIdx, 0, 0, 0, 0, true);
// now write some text above the imported page
$this->pdf->SetFont('Arial', '', '13');
$this->pdf->SetTextColor(0,0,0);
//set position in pdf document
$this->pdf->SetXY(20, 20);
//first parameter defines the line height
$this->pdf->Write(0, 'gift code');
//force the browser to download the output
$this->pdf->Output('gift_coupon_generated.pdf', 'D');
The difference between HEAD (current branch or last committed state on current branch), index (aka. staging area) and working tree (the state of files in checkout) is described in "The Three States" section of the "1.3 Git Basics" chapter of Pro Git book by Scott Chacon (Creative Commons licensed).
Here is the image illustrating it from this chapter:
In the above image "working directory" is the same as "working tree", the "staging area" is an alternate name for git "index", and HEAD points to currently checked out branch, which tip points to last commit in the "git directory (repository)"
Note that git commit -a
would stage changes and commit in one step.
If none of these answers for you, try clearing the Android Studio cache/restart. That was the only thing that worked for me:
From the file menu option, I selected "invalidate caches/restart".
https://teamtreehouse.com/community/gradle-project-sync-failed-7
When you run your application this way, the java excecutable read the MANIFEST inside your jar and find the main class you defined. In this class you have a static method called main. In this method you may use the command line arguments.
I didn't find it listed so updating the list.
You need to have the apk installed and running in front on your phone for this solution:
Windows CMD line:
adb shell dumpsys window windows | findstr <any unique string from your pkg Name>
Linux Terminal:
adb shell dumpsys window windows | grep -i <any unique string from your Pkg Name>
OUTPUT for Calculator package would be:
Window #7 Window{39ced4b1 u0 com.android.calculator2/com.android.calculator2.Calculator}:
mOwnerUid=10036 mShowToOwnerOnly=true package=com.android.calculator2 appop=NONE
mToken=AppWindowToken{29a4bed4 token=Token{2f850b1a ActivityRecord{eefe5c5 u0 com.android.calculator2/.Calculator t322}}}
mRootToken=AppWindowToken{29a4bed4 token=Token{2f850b1a ActivityRecord{eefe5c5 u0 com.android.calculator2/.Calculator t322}}}
mAppToken=AppWindowToken{29a4bed4 token=Token{2f850b1a ActivityRecord{eefe5c5 u0 com.android.calculator2/.Calculator t322}}}
WindowStateAnimator{3e160d22 com.android.calculator2/com.android.calculator2.Calculator}:
mSurface=Surface(name=com.android.calculator2/com.android.calculator2.Calculator)
mCurrentFocus=Window{39ced4b1 u0 com.android.calculator2/com.android.calculator2.Calculator}
mFocusedApp=AppWindowToken{29a4bed4 token=Token{2f850b1a ActivityRecord{eefe5c5 u0 com.android.calculator2/.Calculator t322}}}
Main part is, First Line:
Window #7 Window{39ced4b1 u0 com.android.calculator2/com.android.calculator2.Calculator}:
First part of the output is package name:
com.android.calculator2
Second Part of output (which is after /
) can be two things, in our case its:
com.android.calculator2.Calculator
<PKg name>.<activity name>
=
<com.android.calculator2>.<Calculator>
so .Calculator
is our activity
If second part is entirely different from Package name and doesn't seem to contain pkg name which was before /
in out output, then entire
second part can be used as main activity.
A good thing to remember are these simple rules, and they apply to both parameters and return types...
There is a time and place for each, so make sure you get to know them. Local variables, as you've shown here, are just that, limited to the time they are locally alive in the function scope. In your example having a return type of int*
and returning &i
would have been equally incorrect. You would be better off in that case doing this...
void func1(int& oValue)
{
oValue = 1;
}
Doing so would directly change the value of your passed in parameter. Whereas this code...
void func1(int oValue)
{
oValue = 1;
}
would not. It would just change the value of oValue
local to the function call. The reason for this is because you'd actually be changing just a "local" copy of oValue
, and not oValue
itself.
short direct answer is no or not out of the box but i have come up with a method to use a text box and pure JS code to simulate the date input and do any format you want, here is the code
<html>
<body>
date :
<span style="position: relative;display: inline-block;border: 1px solid #a9a9a9;height: 24px;width: 500px">
<input type="date" class="xDateContainer" onchange="setCorrect(this,'xTime');" style="position: absolute; opacity: 0.0;height: 100%;width: 100%;"><input type="text" id="xTime" name="xTime" value="dd / mm / yyyy" style="border: none;height: 90%;" tabindex="-1"><span style="display: inline-block;width: 20px;z-index: 2;float: right;padding-top: 3px;" tabindex="-1">▼</span>
</span>
<script language="javascript">
var matchEnterdDate=0;
//function to set back date opacity for non supported browsers
window.onload =function(){
var input = document.createElement('input');
input.setAttribute('type','date');
input.setAttribute('value', 'some text');
if(input.value === "some text"){
allDates = document.getElementsByClassName("xDateContainer");
matchEnterdDate=1;
for (var i = 0; i < allDates.length; i++) {
allDates[i].style.opacity = "1";
}
}
}
//function to convert enterd date to any format
function setCorrect(xObj,xTraget){
var date = new Date(xObj.value);
var month = date.getMonth();
var day = date.getDate();
var year = date.getFullYear();
if(month!='NaN'){
document.getElementById(xTraget).value=day+" / "+month+" / "+year;
}else{
if(matchEnterdDate==1){document.getElementById(xTraget).value=xObj.value;}
}
}
</script>
</body>
</html>
1- please note that this method only work for browser that support date type.
2- the first function in JS code is for browser that don't support date type and set the look to a normal text input.
3- if you will use this code for multiple date inputs in your page please change the ID "xTime" of the text input in both function call and the input itself to something else and of course use the name of the input you want for the form submit.
4-on the second function you can use any format you want instead of day+" / "+month+" / "+year for example year+" / "+month+" / "+day and in the text input use a placeholder or value as yyyy / mm / dd for the user when the page load.
If you are using Python3 with pathlib
you can access os.stat()
information using the Path.stat()
method, which has the attribute st_size
(file size in bytes):
>>> from pathlib import Path
>>> mypath = Path("path/to/my/file")
>>> mypath.stat().st_size == 0 # True if empty
Specify an anonymous callback, and make function1 accept it:
$('a.button').click(function(){
if (condition == 'true'){
function1(someVariable, function() {
function2(someOtherVariable);
});
}
else {
doThis(someVariable);
}
});
function function1(param, callback) {
...do stuff
callback();
}
What are the differences between the assignment operators
=
and<-
in R?
As your example shows, =
and <-
have slightly different operator precedence (which determines the order of evaluation when they are mixed in the same expression). In fact, ?Syntax
in R gives the following operator precedence table, from highest to lowest:
… ‘-> ->>’ rightwards assignment ‘<- <<-’ assignment (right to left) ‘=’ assignment (right to left) …
But is this the only difference?
Since you were asking about the assignment operators: yes, that is the only difference. However, you would be forgiven for believing otherwise. Even the R documentation of ?assignOps
claims that there are more differences:
The operator
<-
can be used anywhere, whereas the operator=
is only allowed at the top level (e.g., in the complete expression typed at the command prompt) or as one of the subexpressions in a braced list of expressions.
Let’s not put too fine a point on it: the R documentation is wrong. This is easy to show: we just need to find a counter-example of the =
operator that isn’t (a) at the top level, nor (b) a subexpression in a braced list of expressions (i.e. {…; …}
). — Without further ado:
x
# Error: object 'x' not found
sum((x = 1), 2)
# [1] 3
x
# [1] 1
Clearly we’ve performed an assignment, using =
, outside of contexts (a) and (b). So, why has the documentation of a core R language feature been wrong for decades?
It’s because in R’s syntax the symbol =
has two distinct meanings that get routinely conflated (even by experts, including in the documentation cited above):
=
operator it performs no action at runtime, it merely changes the way an expression is parsed.So how does R decide whether a given usage of =
refers to the operator or to named argument passing? Let’s see.
In any piece of code of the general form …
‹function_name›(‹argname› = ‹value›, …)
‹function_name›(‹args›, ‹argname› = ‹value›, …)
… the =
is the token that defines named argument passing: it is not the assignment operator. Furthermore, =
is entirely forbidden in some syntactic contexts:
if (‹var› = ‹value›) …
while (‹var› = ‹value›) …
for (‹var› = ‹value› in ‹value2›) …
for (‹var1› in ‹var2› = ‹value›) …
Any of these will raise an error “unexpected '=' in ‹bla›”.
In any other context, =
refers to the assignment operator call. In particular, merely putting parentheses around the subexpression makes any of the above (a) valid, and (b) an assignment. For instance, the following performs assignment:
median((x = 1 : 10))
But also:
if (! (nf = length(from))) return()
Now you might object that such code is atrocious (and you may be right). But I took this code from the base::file.copy
function (replacing <-
with =
) — it’s a pervasive pattern in much of the core R codebase.
The original explanation by John Chambers, which the the R documentation is probably based on, actually explains this correctly:
[
=
assignment is] allowed in only two places in the grammar: at the top level (as a complete program or user-typed expression); and when isolated from surrounding logical structure, by braces or an extra pair of parentheses.
In sum, by default the operators <-
and =
do the same thing. But either of them can be overridden separately to change its behaviour. By contrast, <-
and ->
(left-to-right assignment), though syntactically distinct, always call the same function. Overriding one also overrides the other. Knowing this is rarely practical but it can be used for some fun shenanigans.
You can use WMI Code creator. I guess you can have a combination of "keys" (processorid,mac and software generated key).
using System.Management;
using System.Windows.Forms;
try
{
ManagementObjectSearcher searcher =
new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_Processor");
foreach (ManagementObject queryObj in searcher.Get())
{
Console.WriteLine("-----------------------------------");
Console.WriteLine("Win32_Processor instance");
Console.WriteLine("-----------------------------------");
Console.WriteLine("Architecture: {0}", queryObj["Architecture"]);
Console.WriteLine("Caption: {0}", queryObj["Caption"]);
Console.WriteLine("Family: {0}", queryObj["Family"]);
Console.WriteLine("ProcessorId: {0}", queryObj["ProcessorId"]);
}
}
catch (ManagementException e)
{
MessageBox.Show("An error occurred while querying for WMI data: " + e.Message);
}
Retrieving Hardware Identifiers in C# with WMI by Peter Bromberg
The html code you written is absolutely perfect
<ul class="nav navbar-nav list-inline">
<li class="list-inline-item">FB</li>
<li class="list-inline-item">G+</li>
<li class="list-inline-item">T</li>
</ul>
The reasons that could be possible is
1. Check out the CSS for class name "nav" or "navbar-nav" may be over writing it, try to remove and debug the class names in the ul element.
2. Check any of the child element(a tag or "social-icon" class) is using block level CSS style
3. Check out your using a HTML5 !DOCTYPE html
4. Place your bootstrap.css link at the last before closing your head tag
5. Change text-xs-center to text-center because xs is dropped in Bootstrap 4.
This One will work perfectly fine
<!-- Use this inside Head tag-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
<!-- Use this inside Body tag-->
<div class="container">
<ul class="list-inline">
<li class="list-inline-item"><a class="social-icon text-center" target="_blank" href="#">FB</a></li>
<li class="list-inline-item"><a class="social-icon text-center" target="_blank" href="#">G+</a></li>
<li class="list-inline-item"><a class="social-icon text-center" target="_blank" href="#">T</a></li>
</ul>
</div>
(function ($) {
$( window ).load(function() {
$('.navbar a').unbind('click');
$('.navbar a').click(function () {
//DO SOMETHING
return false;
});
});
})(jQuery);
I find this way easier to implement. And it has the advantage that you js. Is not inside your html but in a different file. I think that without the unbind. Both events are still active. Not sure. But in a way you only need this one event
Find the attribute card_view:cardUseCompatPadding="true"
in cards_layout.xml and delete it. Start app and you will find there is no margin between each cardview item.
Add margin attributes you like. Ex:
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
login to mysql with proper credential and used mysql>SHOW VARIABLES LIKE 'datadir'; that will give you path of where mysql stored
Create a taxonomy field category (field name = post_category) and import it in your template as shown below:
<?php
$categ = get_field('post_category');
$args = array( 'posts_per_page' => 6,
'category_name' => $categ->slug );
$myposts = get_posts( $args );
foreach ( $myposts as $post ) : setup_postdata( $post ); ?>
//your code here
<?php endforeach;
wp_reset_postdata();?>
I agree with dfsq if all you want to do is show the button. If you want to switch between hiding and showing the button however, it is easier to use:
$("#buttonEditComment").toggleClass("hide");
Does Retrofit have any method to achieve this? If not, how I can do that?
YES
Retrofit is type-safe REST client for Android and Java. Retrofit turns your HTTP API into a Java interface.
For more information refer the following link
https://howtodoinjava.com/retrofit2/retrofit2-beginner-tutorial
To make the query run faster in big tables where not every line needs to be updated, you can also choose to only update rows that will be modified:
UPDATE dbo.xxx
SET Value = REPLACE(Value, '123', '')
WHERE ID <= 4
AND Value LIKE '%123%'
import numpy as np
def get_median(xs):
mid = len(xs) // 2 # Take the mid of the list
if len(xs) % 2 == 1: # check if the len of list is odd
return sorted(xs)[mid] #if true then mid will be median after sorting
else:
#return 0.5 * sum(sorted(xs)[mid - 1:mid + 1])
return 0.5 * np.sum(sorted(xs)[mid - 1:mid + 1]) #if false take the avg of mid
print(get_median([7, 7, 3, 1, 4, 5]))
print(get_median([1,2,3, 4,5]))
The answer by Nick Mitchinson is for Bootstrap version 2.
If you are using Bootstrap version 3, then forms have changed a bit. For bootstrap 3, use the following instead:
<div class="form-horizontal">
<div class="form-group">
<div class="col-md-6">
<textarea class="form-control" rows="3" placeholder="What's up?" required></textarea>
</div>
</div>
</div>
Where, col-md-6 will target medium sized devices. You can add col-xs-6 etc to target smaller devices.
Slightly different approach:
MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, String>();
headers.add("HeaderName", "value");
headers.add("Content-Type", "application/json");
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
HttpEntity<ObjectToPass> request = new HttpEntity<ObjectToPass>(objectToPass, headers);
restTemplate.postForObject(url, request, ClassWhateverYourControllerReturns.class);
If you want to do something to each row in a DataFrame object, use map
. This will allow you to perform further calculations on each row. It's the equivalent of looping across the entire dataset from 0
to len(dataset)-1
.
Note that this will return a PipelinedRDD, not a DataFrame.
indexPathForRow
is a class method!
The code should read:
NSIndexPath *myIP = [NSIndexPath indexPathForRow:0 inSection:0] ;
Please check your submodules directory.
If there is only a .git file in it, then delete it.
Now execute git submodule update --remote --init
new 2021 hack for Mac:
armhf
stands for "arm hard float", and is the name given to a debian port for arm processors (armv7+) that have hardware floating point support.
On the beaglebone black, for example:
:~$ dpkg --print-architecture
armhf
Although other commands (such as uname -a
or arch
) will just show armv7l
:~$ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 2 (v7l)
BogoMIPS : 995.32
Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls
...
The vfpv3
listed under Features
is what refers to the floating point support.
Incidentally, armhf
, if your processor supports it, basically supersedes Raspbian, which if I understand correctly was mainly a rebuild of armhf
with work arounds to deal with the lack of floating point support on the original raspberry pi's. Nowdays, of course, there's a whole ecosystem build up around Raspbian, so they're probably not going to abandon it. However, this is partly why the beaglebone runs straight debian, and that's ok even if you're used to Raspbian, unless you want some of the special included non-free software such as Mathematica.
Why use LEN so you have 2 string functions? All you need is character 5 on...
...SUBSTRING (Code1, 5, 8000)...
I wrote a script that does this:
function! WrapSelect (front)
"puts characters around the selected text.
let l:front = a:front
if (a:front == '[')
let l:back = ']'
elseif (a:front == '(')
let l:back = ')'
elseif (a:front == '{')
let l:back = '}'
elseif (a:front == '<')
let l:back = '>'
elseif (a:front =~ " ")
let l:split = split(a:front)
let l:back = l:split[1]
let l:front = l:split[0]
else
let l:back = a:front
endif
"execute: concat all these strings. '.' means "concat without spaces"
"norm means "run in normal mode and also be able to use \<C-x> characters"
"gv means "get the previous visual selection back up"
"c means "cut visual selection and go to insert mode"
"\<C-R> means "insert the contents of a register. in this case, the
"default register"
execute 'norm! gvc' . l:front. "\<C-R>\"" . l:back
endfunction
vnoremap <C-l> :<C-u>call WrapSelect(input('Wrapping? Give both (space separated) or just the first one: '))<cr>
To use, just highlight something, hit control l, and then type a character. If it's one of the characters the function knows about, it'll provide the correct terminating character. If it's not, it'll use the same character to insert on both sides.
Surround.vim can do more than just this, but this was sufficient for my needs.
This can occur on android too not just computers. Was browsing using Kiwi when the site I was on began to endlessly redirect so I cut net access to close it out and noticed my phone had DL'd something f.txt
in my downloaded files.
Deleted it and didn't open.
GitHub suggests that you should make sure to only use \n as a newline character in git-handled repos. There's an option to auto-convert:
$ git config --global core.autocrlf true
Of course, this is said to convert crlf to lf, while you want to convert cr to lf. I hope this still works …
And then convert your files:
# Remove everything from the index
$ git rm --cached -r .
# Re-add all the deleted files to the index
# You should get lots of messages like: "warning: CRLF will be replaced by LF in <file>."
$ git diff --cached --name-only -z | xargs -0 git add
# Commit
$ git commit -m "Fix CRLF"
core.autocrlf is described on the man page.
By entering $PATH
on its own at the command prompt, you're trying to run it. This isn't like Windows where you can get your path output by simply typing path
.
If you want to see what the path is, simply echo it:
echo $PATH
This post MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES) is useful. Sometimes, there is an anonymous user ''@'localhost' or ''@'127.0.0.1'. So, to solve the problem,
first drop the user whose 'create user' failed.
Create new user.
Grant required privileges to the new user.
Flush privileges.
mysql
's ego
commandFrom mysql
's help
command:
ego (\G) Send command to mysql server, display result vertically.
So by appending a \G
to your select
, you can get a very clean vertical output:
mysql> SELECT * FROM sometable \G
You can tell MySQL to use the less
pager with its -S
option that chops wide lines and gives you an output that you can scroll with the arrow keys:
mysql> pager less -S
Thus, next time you run a command with a wide output, MySQL will let you browse the output with the less
pager:
mysql> SELECT * FROM sometable;
If you're done with the pager and want to go back to the regular output on stdout
, use this:
mysql> nopager
If stuffs
is a list of strings, just this would work:
{{ stuffs|join(", ") }}
Link to join
filter documentation, link to filters in general documentation.
p.s.
More reader friendly way {{ my ~ ', ' ~ string }}
Let us assume you hit a url as www.example.com/test/111 . Now you have to retrieve value 111 (which is dynamic) to your controller method .At time you ll be using @PathVariable as follows :
@RequestMapping(value = " /test/{testvalue}", method=RequestMethod.GET)
public void test(@PathVariable String testvalue){
//you can use test value here
}
SO the variable value is retrieved from the url
Open 'postgresql.conf' in you favourite editor. Look for the variable 'unix_socket_directories', it will most likely look like this:
unix_socket_directories = '/private/tmp/'
Change the line to this:
unix_socket_directories = '/var/pgsql_socket/'
Note if you want the socket files in more than one directory comma separate them.
Is there any better way than just looping through and manually comparing the two fields for each object and then breaking when found? That just seems so messy, looking for a better way.
If your concern is maintainability you could do what Fabian Steeg suggest ( that's what I would do ) although it probably isn't the "most efficient" ( because you have to sort the array first and then perform the binary search ) but certainly the cleanest and better option.
If you're really concerned with efficiency, you can create a custom List implementation that uses the field in your object as the hash and use a HashMap as storage. But probably this would be too much.
Then you have to change the place where you fill the data from ArrayList to YourCustomList.
Like:
List list = new ArrayList();
fillFromSoap( list );
To:
List list = new MyCustomSpecialList();
fillFromSoap( list );
The implementation would be something like the following:
class MyCustomSpecialList extends AbstractList {
private Map<Integer, YourObject> internalMap;
public boolean add( YourObject o ) {
internalMap.put( o.getThatFieldYouKnow(), o );
}
public boolean contains( YourObject o ) {
return internalMap.containsKey( o.getThatFieldYouKnow() );
}
}
Pretty much like a HashSet, the problem here is the HashSet relies on the good implementation of the hashCode method, which probably you don't have. Instead you use as the hash "that field you know" which is the one that makes one object equals to the other.
Of course implementing a List from the scratch lot more tricky than my snippet above, that's why I say the Fabian Steeg suggestion would be better and easier to implement ( although something like this would be more efficient )
Tell us what you did at the end.
tl;dr my opinion is to use a unary +
to trigger the unboxing on one of the operands when checking for value equality, and simply use the maths operators otherwise. Rationale follows:
It has been mentioned already that ==
comparison for Integer
is identity comparison, which is usually not what a programmer want, and that the aim is to do value comparison; still, I've done a little science about how to do that comparison most efficiently, both in term of code compactness, correctness and speed.
I used the usual bunch of methods:
public boolean method1() {
Integer i1 = 7, i2 = 5;
return i1.equals( i2 );
}
public boolean method2() {
Integer i1 = 7, i2 = 5;
return i1.intValue() == i2.intValue();
}
public boolean method3() {
Integer i1 = 7, i2 = 5;
return i1.intValue() == i2;
}
public boolean method4() {
Integer i1 = 7, i2 = 5;
return i1 == +i2;
}
public boolean method5() { // obviously not what we want..
Integer i1 = 7, i2 = 5;
return i1 == i2;
}
and got this code after compilation and decompilation:
public boolean method1() {
Integer var1 = Integer.valueOf( 7 );
Integer var2 = Integer.valueOf( 5 );
return var1.equals( var2 );
}
public boolean method2() {
Integer var1 = Integer.valueOf( 7 );
Integer var2 = Integer.valueOf( 5 );
if ( var2.intValue() == var1.intValue() ) {
return true;
} else {
return false;
}
}
public boolean method3() {
Integer var1 = Integer.valueOf( 7 );
Integer var2 = Integer.valueOf( 5 );
if ( var2.intValue() == var1.intValue() ) {
return true;
} else {
return false;
}
}
public boolean method4() {
Integer var1 = Integer.valueOf( 7 );
Integer var2 = Integer.valueOf( 5 );
if ( var2.intValue() == var1.intValue() ) {
return true;
} else {
return false;
}
}
public boolean method5() {
Integer var1 = Integer.valueOf( 7 );
Integer var2 = Integer.valueOf( 5 );
if ( var2 == var1 ) {
return true;
} else {
return false;
}
}
As you can easily see, method 1 calls Integer.equals()
(obviously), methods 2-4 result in exactly the same code, unwrapping the values by means of .intValue()
and then comparing them directly, and method 5 just triggers an identity comparison, being the incorrect way to compare values.
Since (as already mentioned by e.g. JS) equals()
incurs an overhead (it has to do instanceof
and an unchecked cast), methods 2-4 will work with exactly the same speed, noticingly better than method 1 when used in tight loops, since HotSpot is not likely to optimize out the casts & instanceof
.
It's quite similar with other comparison operators (e.g. <
/>
) - they will trigger unboxing, while using compareTo()
won't - but this time, the operation is highly optimizable by HS since intValue()
is just a getter method (prime candidate to being optimized out).
In my opinion, the seldom used version 4 is the most concise way - every seasoned C/Java developer knows that unary plus is in most cases equal to cast to int
/.intValue()
- while it may be a little WTF moment for some (mostly those who didn't use unary plus in their lifetime), it arguably shows the intent most clearly and most tersely - it shows that we want an int
value of one of the operands, forcing the other value to unbox as well. It is also unarguably most similar to the regular i1 == i2
comparison used for primitive int
values.
My vote goes for i1 == +i2
& i1 > i2
style for Integer
objects, both for performance & consistency reasons. It also makes the code portable to primitives without changing anything other than the type declaration. Using named methods seems like introducing semantic noise to me, similar to the much-criticized bigInt.add(10).multiply(-3)
style.
the most effective method is to use android-async-http
You can use this code to upload a file:
// gather your request parameters
File myFile = new File("/path/to/file.png");
RequestParams params = new RequestParams();
try {
params.put("profile_picture", myFile);
} catch(FileNotFoundException e) {}
// send request
AsyncHttpClient client = new AsyncHttpClient();
client.post(url, params, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] bytes) {
// handle success response
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] bytes, Throwable throwable) {
// handle failure response
}
});
Note that you can put this code directly into your main Activity, no need to create a background Task explicitly. AsyncHttp will take care of that for you!
function realtime() {
let time = moment().format('hh:mm:ss.SS a').replace("m", "");
document.getElementById('time').innerHTML = time;
setInterval(() => {
time = moment().format('hh:mm:ss.SS A');
document.getElementById('time').innerHTML = time;
}, 0)
}
realtime();
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.1/moment.min.js"></script>
<div id="time"></div>
_x000D_
I suggest you use TO_CHAR()
when converting to string. In order to do that, you need to build a date first.
SELECT TO_CHAR(TO_DATE(DAY||'-'||MONTH||'-'||YEAR, 'dd-mm-yyyy'), 'dd-mm-yyyy') AS FORMATTED_DATE
FROM
(SELECT EXTRACT( DAY FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy')
FROM DUAL
)) AS DAY, TO_NUMBER(EXTRACT( MONTH FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy') FROM DUAL
)), 09) AS MONTH, EXTRACT(YEAR FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy') FROM DUAL
)) AS YEAR
FROM DUAL
);
The top answers are correct, but deeply technical. For those newer to Ruby:
require_relative
will most likely be used to bring in code from another file that you wrote. for example, what if you have data in ~/my-project/data.rb
and you want to include that in ~/my-project/solution.rb
? in solution.rb
you would add require_relative 'data'
.
it is important to note these files do not need to be in the same directory. require_relative '../../folder1/folder2/data'
is also valid.
require
will most likely be used to bring in code from a library someone else wrote.for example, what if you want to use one of the helper functions provided in the active_support
library? you'll need to install the gem with gem install activesupport
and then in the file require 'active_support'
.
require 'active_support/all'
"FooBar".underscore
Said differently--
require_relative
requires a file specifically pointed to relative to the file that calls it.
require
requires a file included in the $LOAD_PATH
.
The suggested edit queue is full for @tibor-udvari's excellent fetch answer, so I'll post my suggested edits as a new answer.
This function gets the content type from the header if returned, otherwise falls back on a settable default type.
async function getFileFromUrl(url, name, defaultType = 'image/jpeg'){
const response = await fetch(url);
const data = await response.blob();
return new File([data], name, {
type: response.headers.get('content-type') || defaultType,
});
}
// `await` can only be used in an async body, but showing it here for simplicity.
const file = await getFileFromUrl('https://example.com/image.jpg', 'example.jpg');
Normally you cant update a page from a servlet. Client (browser) has to request an update. Eiter client loads a whole new page or it requests an update to a part of an existing page. This technique is called Ajax.
What's probably happening is that React thinks that only one MyInput
(unemployment-duration
) is added between the renders. As such, the job-title
never gets replaced with the unemployment-reason
, which is also why the predefined values are swapped.
When React does the diff, it will determine which components are new and which are old based on their key
property. If no such key is provided in the code, it will generate its own.
The reason why the last code snippet you provide works is because React essentially needs to change the hierarchy of all elements under the parent div
and I believe that would trigger a re-render of all children (which is why it works). Had you added the span
to the bottom instead of the top, the hierarchy of the preceding elements wouldn't change, and those element's wouldn't re-render (and the problem would persist).
Here's what the official React documentation says:
The situation gets more complicated when the children are shuffled around (as in search results) or if new components are added onto the front of the list (as in streams). In these cases where the identity and state of each child must be maintained across render passes, you can uniquely identify each child by assigning it a key.
When React reconciles the keyed children, it will ensure that any child with key will be reordered (instead of clobbered) or destroyed (instead of reused).
You should be able to fix this by providing a unique key
element yourself to either the parent div
or to all MyInput
elements.
For example:
render(){
if (this.state.employed) {
return (
<div key="employed">
<MyInput ref="job-title" name="job-title" />
</div>
);
} else {
return (
<div key="notEmployed">
<MyInput ref="unemployment-reason" name="unemployment-reason" />
<MyInput ref="unemployment-duration" name="unemployment-duration" />
</div>
);
}
}
OR
render(){
if (this.state.employed) {
return (
<div>
<MyInput key="title" ref="job-title" name="job-title" />
</div>
);
} else {
return (
<div>
<MyInput key="reason" ref="unemployment-reason" name="unemployment-reason" />
<MyInput key="duration" ref="unemployment-duration" name="unemployment-duration" />
</div>
);
}
}
Now, when React does the diff, it will see that the divs
are different and will re-render it including all of its' children (1st example). In the 2nd example, the diff will be a success on job-title
and unemployment-reason
since they now have different keys.
You can of course use any keys you want, as long as they are unique.
Update August 2017
For a better insight into how keys work in React, I strongly recommend reading my answer to Understanding unique keys in React.js.
Update November 2017
This update should've been posted a while ago, but using string literals in ref
is now deprecated. For example ref="job-title"
should now instead be ref={(el) => this.jobTitleRef = el}
(for example). See my answer to Deprecation warning using this.refs for more info.
This is an expansion to totem's answer. It does basically the same thing but the property matching is based on the serialized json object, not reflect the .net object. This is important if you're using [JsonProperty], using the CamelCasePropertyNamesContractResolver, or doing anything else that will cause the json to not match the .net object.
Usage is simple:
[KnownType(typeof(B))]
public class A
{
public string Name { get; set; }
}
public class B : A
{
public string LastName { get; set; }
}
Converter code:
/// <summary>
/// Use KnownType Attribute to match a divierd class based on the class given to the serilaizer
/// Selected class will be the first class to match all properties in the json object.
/// </summary>
public class KnownTypeConverter : JsonConverter {
public override bool CanConvert( Type objectType ) {
return System.Attribute.GetCustomAttributes( objectType ).Any( v => v is KnownTypeAttribute );
}
public override bool CanWrite {
get { return false; }
}
public override object ReadJson( JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer ) {
// Load JObject from stream
JObject jObject = JObject.Load( reader );
// Create target object based on JObject
System.Attribute[ ] attrs = System.Attribute.GetCustomAttributes( objectType ); // Reflection.
// check known types for a match.
foreach( var attr in attrs.OfType<KnownTypeAttribute>( ) ) {
object target = Activator.CreateInstance( attr.Type );
JObject jTest;
using( var writer = new StringWriter( ) ) {
using( var jsonWriter = new JsonTextWriter( writer ) ) {
serializer.Serialize( jsonWriter, target );
string json = writer.ToString( );
jTest = JObject.Parse( json );
}
}
var jO = this.GetKeys( jObject ).Select( k => k.Key ).ToList( );
var jT = this.GetKeys( jTest ).Select( k => k.Key ).ToList( );
if( jO.Count == jT.Count && jO.Intersect( jT ).Count( ) == jO.Count ) {
serializer.Populate( jObject.CreateReader( ), target );
return target;
}
}
throw new SerializationException( string.Format( "Could not convert base class {0}", objectType ) );
}
public override void WriteJson( JsonWriter writer, object value, JsonSerializer serializer ) {
throw new NotImplementedException( );
}
private IEnumerable<KeyValuePair<string, JToken>> GetKeys( JObject obj ) {
var list = new List<KeyValuePair<string, JToken>>( );
foreach( var t in obj ) {
list.Add( t );
}
return list;
}
}
You're using the argument as a reference but actually it's a pointer. Change vector<int>*
to vector<int>&
. And you should really set search4
to something before using it.
Basically shared folders are renamed to synced folder from v1 to v2 (docs), under the bonnet it is still using vboxsf
between host and guest (there is known performance issues if there are large numbers of files/directories).
/vagrant
in guestVagrant is mounting the current working directory (where Vagrantfile
resides) as /vagrant
in the guest, this is the default behaviour.
See docs
NOTE: By default, Vagrant will share your project directory (the directory with the Vagrantfile) to /vagrant.
You can disable this behaviour by adding cfg.vm.synced_folder ".", "/vagrant", disabled: true
in your Vagrantfile
.
Based on the output /tmp
on host was NOT mounted during up time.
Use VAGRANT_INFO=debug vagrant up
or VAGRANT_INFO=debug vagrant reload
to start the VM for more output regarding why the synced folder is not mounted. Could be a permission issue (mode bits of /tmp
on host should be drwxrwxrwt
).
I did a test quick test using the following and it worked (I used opscode bento raring vagrant base box)
config.vm.synced_folder "/tmp", "/tmp/src"
output
$ vagrant reload
[default] Attempting graceful shutdown of VM...
[default] Setting the name of the VM...
[default] Clearing any previously set forwarded ports...
[default] Creating shared folders metadata...
[default] Clearing any previously set network interfaces...
[default] Available bridged network interfaces:
1) eth0
2) vmnet8
3) lxcbr0
4) vmnet1
What interface should the network bridge to? 1
[default] Preparing network interfaces based on configuration...
[default] Forwarding ports...
[default] -- 22 => 2222 (adapter 1)
[default] Running 'pre-boot' VM customizations...
[default] Booting VM...
[default] Waiting for VM to boot. This can take a few minutes.
[default] VM booted and ready for use!
[default] Configuring and enabling network interfaces...
[default] Mounting shared folders...
[default] -- /vagrant
[default] -- /tmp/src
Within the VM, you can see the mount info /tmp/src on /tmp/src type vboxsf (uid=900,gid=900,rw)
.
Oracle optimizer chooses join order of tables for inner join. Optimizer chooses the join order of tables only in simple FROM clauses . U can check the oracle documentation in their website. And for the left, right outer join the most voted answer is right. The optimizer chooses the optimal join order as well as the optimal index for each table. The join order can affect which index is the best choice. The optimizer can choose an index as the access path for a table if it is the inner table, but not if it is the outer table (and there are no further qualifications).
The optimizer chooses the join order of tables only in simple FROM clauses. Most joins using the JOIN keyword are flattened into simple joins, so the optimizer chooses their join order.
The optimizer does not choose the join order for outer joins; it uses the order specified in the statement.
When selecting a join order, the optimizer takes into account: The size of each table The indexes available on each table Whether an index on a table is useful in a particular join order The number of rows and pages to be scanned for each table in each join order
You can also install Fiddler (http://www.fiddler2.com/fiddler2/) which is very easy to install (easier than Apache for example).
After launching it, it will register itself as system proxy. Then open the "Rules" menu, and choose "Customize Rules..." to open a JScript file which allow you to customize requests.
To add a custom header, just add a line in the OnBeforeRequest
function:
oSession.oRequest.headers.Add("MyHeader", "MyValue");
This:
var txt=new RegExp(pattern,attributes);
is equivalent to this:
var txt=/pattern/attributes;
For each iteration of the ng-repeat loop, line
is a reference to an object in your array. Therefore, to preview the value, use {{line.text}}
.
Similarly, to databind to the text, databind to the same: ng-model="line.text"
. You don't need to use value
when using ng-model (actually you shouldn't).
For a more in-depth look at scopes and ng-repeat, see What are the nuances of scope prototypal / prototypical inheritance in AngularJS?, section ng-repeat.
To answer your comment to Alex. Here's quick code that should allow you to get the fields like activity_details, last_name, etc. from the json dictionary that is returned:
NSDictionary *userinfo=[jsondic valueforKey:@"#data"];
NSDictionary *user;
NSInteger i = 0;
NSString *skey;
if(userinfo != nil){
for( i = 0; i < [userinfo count]; i++ ) {
if(i)
skey = [NSString stringWithFormat:@"%d",i];
else
skey = @"";
user = [userinfo objectForKey:skey];
NSLog(@"activity_details:%@",[user objectForKey:@"activity_details"]);
NSLog(@"last_name:%@",[user objectForKey:@"last_name"]);
NSLog(@"first_name:%@",[user objectForKey:@"first_name"]);
NSLog(@"photo_url:%@",[user objectForKey:@"photo_url"]);
}
}
try adding compile("org.springframework.boot:spring-boot-starter-thymeleaf") dependency to your gradle file.Thymeleaf helps mapping views.
You can use following:
angular.element(domElement).scope()
to get the current scope for the element
angular.element(domElement).injector()
to get the current app injector
angular.element(domElement).controller()
to get a hold of the ng-controller instance.
Hope that might help
This has been answered thoroughly. Just want to post this method i have created based on Powershell-Jobs as a reference.
Jobs are passed on as a list of script-blocks. They can be parameterized. Output of the jobs is color-coded and prefixed with a job-index (just like in a vs-build-process, as this will be used in a build) Can be used to startup multiple servers at a time or running build steps in parallel or so..
function Start-Parallel {
param(
[ScriptBlock[]]
[Parameter(Position = 0)]
$ScriptBlock,
[Object[]]
[Alias("arguments")]
$parameters
)
$jobs = $ScriptBlock | ForEach-Object { Start-Job -ScriptBlock $_ -ArgumentList $parameters }
$colors = "Blue", "Red", "Cyan", "Green", "Magenta"
$colorCount = $colors.Length
try {
while (($jobs | Where-Object { $_.State -ieq "running" } | Measure-Object).Count -gt 0) {
$jobs | ForEach-Object { $i = 1 } {
$fgColor = $colors[($i - 1) % $colorCount]
$out = $_ | Receive-Job
$out = $out -split [System.Environment]::NewLine
$out | ForEach-Object {
Write-Host "$i> "-NoNewline -ForegroundColor $fgColor
Write-Host $_
}
$i++
}
}
} finally {
Write-Host "Stopping Parallel Jobs ..." -NoNewline
$jobs | Stop-Job
$jobs | Remove-Job -Force
Write-Host " done."
}
}
sample output:
If you frequently use other algorithms from the STL, there are several advantages to for_each
:
Unlike a traditional for loop, for_each
forces you to write code that will work for any input iterator. Being restricted in this way can actually be a good thing because:
for_each
.Using for_each
sometimes makes it more obvious that you can use a more specific STL function to do the same thing. (As in Jerry Coffin's example; it's not necessarily the case that for_each
is the best option, but a for loop is not the only alternative.)
To disable the blue glow (but you can modify the code to change color, size, etc), add this to your css:
.search-form input[type="search"] {
-webkit-box-shadow: none;
outline: -webkit-focus-ring-color auto 0px;
}
Here's a screencapture showing the effect: before and after:
As an add-on to the other answers, here's how I'd explain it to a layman:
Your source code is like the blueprint of a ship. It defines how the ship should be made.
If you hand off your blueprint to the shipyard, and they find a defect while building the ship, they'll stop building and report it to you immediately, before the ship has ever left the drydock or touched water. This is a compile-time error. The ship was never even actually floating or using its engines. The error was found because it prevented the ship even being made.
When your code compiles, it's like the ship being completed. Built and ready to go. When you execute your code, that's like launching the ship on a voyage. The passengers are boarded, the engines are running and the hull is on the water, so this is runtime. If your ship has a fatal flaw that sinks it on its maiden voyage (or maybe some voyage after for extra headaches) then it suffered a runtime error.
Use a convert function to get all entries for a particular day.
Select * from tblErrorLog where convert(date,errorDate,101) = '12/20/2008'
See CAST and CONVERT for more info
I have solved as plist file.
Add a NSAppTransportSecurity : Dictionary.
Add Subkey named " NSAllowsArbitraryLoads " as Boolean : YES
How about print (x, y)
at once.
from matplotlib import pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
A = -0.75, -0.25, 0, 0.25, 0.5, 0.75, 1.0
B = 0.73, 0.97, 1.0, 0.97, 0.88, 0.73, 0.54
plt.plot(A,B)
for xy in zip(A, B): # <--
ax.annotate('(%s, %s)' % xy, xy=xy, textcoords='data') # <--
plt.grid()
plt.show()
i called activity_name.this.finish()
after starting new intent and it worked for me.
I tried "FLAG_ACTIVITY_CLEAR_TOP" and "FLAG_ACTIVITY_NEW_TASK"
But it won't work for me... I am not suggesting this solution for use but if setting flag won't work for you than you can try this..But still i recommend don't use it
Server side put this on top of .php:
header('Access-Control-Allow-Origin: *');
You can set specific domain restriction access:
header('Access-Control-Allow-Origin: https://www.example.com')
Make sure you understand the three return values of os.walk
:
for root, subdirs, files in os.walk(rootdir):
has the following meaning:
root
: Current path which is "walked through"subdirs
: Files in root
of type directoryfiles
: Files in root
(not in subdirs
) of type other than directoryAnd please use os.path.join
instead of concatenating with a slash! Your problem is filePath = rootdir + '/' + file
- you must concatenate the currently "walked" folder instead of the topmost folder. So that must be filePath = os.path.join(root, file)
. BTW "file" is a builtin, so you don't normally use it as variable name.
Another problem are your loops, which should be like this, for example:
import os
import sys
walk_dir = sys.argv[1]
print('walk_dir = ' + walk_dir)
# If your current working directory may change during script execution, it's recommended to
# immediately convert program arguments to an absolute path. Then the variable root below will
# be an absolute path as well. Example:
# walk_dir = os.path.abspath(walk_dir)
print('walk_dir (absolute) = ' + os.path.abspath(walk_dir))
for root, subdirs, files in os.walk(walk_dir):
print('--\nroot = ' + root)
list_file_path = os.path.join(root, 'my-directory-list.txt')
print('list_file_path = ' + list_file_path)
with open(list_file_path, 'wb') as list_file:
for subdir in subdirs:
print('\t- subdirectory ' + subdir)
for filename in files:
file_path = os.path.join(root, filename)
print('\t- file %s (full path: %s)' % (filename, file_path))
with open(file_path, 'rb') as f:
f_content = f.read()
list_file.write(('The file %s contains:\n' % filename).encode('utf-8'))
list_file.write(f_content)
list_file.write(b'\n')
If you didn't know, the with
statement for files is a shorthand:
with open('filename', 'rb') as f:
dosomething()
# is effectively the same as
f = open('filename', 'rb')
try:
dosomething()
finally:
f.close()
I'm using php-5.4.45 and I got the same problem.
If you are a php-fpm user, try edit php-fpm.conf and change listen.owner and listen.group to the right one. My nginx user is apache, so here I change these to params to apache, then it works well for me.
For apache user, I guess you should edit your fast-cgi params refer the two params I mention above.
Since HTTP Params class is immutable therefore you need to chain the set method:
const params = new HttpParams()
.set('aaa', '111')
.set('bbb', "222");
Single quotes are escaped by doubling them up,
The following SQL illustrates this functionality.
declare @person TABLE (
[First] nvarchar(200),
[Last] nvarchar(200)
)
insert into @person
(First, Last)
values
('Joe', 'O''Brien')
select * from @person
First | Last
===================
Joe | O'Brien
Follow up to accepted answer.
You need something other than CTRL-D to designate the end if using this in a script. Try this instead:
cat << EOF >> filename
This is text entered via the keyboard or via a script.
EOF
This will append text to the stated file (not including "EOF").
It utilizes a here document (or heredoc).
However if you need sudo to append to the stated file, you will run into trouble utilizing a heredoc due to I/O redirection if you're typing directly on the command line.
This variation will work when you are typing directly on the command line:
sudo sh -c 'cat << EOF >> filename
This is text entered via the keyboard.
EOF'
Or you can use tee
instead to avoid the command line sudo issue seen when using the heredoc with cat:
tee -a filename << EOF
This is text entered via the keyboard or via a script.
EOF
The proposed standard file is /etc/os-release
. See http://www.freedesktop.org/software/systemd/man/os-release.html
You can execute something like:
$ source /etc/os-release
$ echo $ID
fedora
$ echo $VERSION_ID
17
$ echo $VERSION
17 (Beefy Miracle)
All you should need to do is:
# if the file in the right place isn't already committed:
git add <path to desired file>
# remove the "both deleted" file from the index:
git rm --cached ../public/images/originals/dog.ai
# commit the merge:
git commit
Serialisation in java is not meant as long term persistence or transport format - it is too fragile for this. With the slightest difference in class bytecode and JVM, your data is not readable anymore. Use XML or JSON data-binding for your task (XStream is fast and easy to use, and there are a ton of alternatives)
jQuery .one()
should not be used with the click event but with the submit
event as described below.
$('input[type=submit]').one('submit', function() {
$(this).attr('disabled','disabled');
});
The Visual jQuery site has some great examples of jQuery's array functionality. (Click "Utilities" on the left-hand tab, and then "Array and Object operations".)
Use typings to access node functions from TypeScript:
typings install env~node --global
If you don't have typings install it:
npm install typings --global
certs
root@c339504909345:/opt/jdk-minimal/jre/lib/security # keytool -cacerts -list
Enter keystore password:
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 80 entries
root@c39596768075:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/cacerts # keytool -cacerts -list
Enter keystore password:
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 151 entries
jlink
as /opt/jdk/bin/jlink \
--module-path /opt/jdk/jmods...
So, here's the different paths and the sequence of the commands...
# Java 8
COPY --from=marcellodesales-springboot-builder-jdk8 /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/cacerts /etc/ssl/certs/java/cacerts
# Java 10
RUN rm -f /opt/jdk-minimal/jre/lib/security/cacerts
RUN ln -s /etc/ssl/certs/java/cacerts /opt/jdk-minimal/jre/lib/security/cacerts
I had same issue. I used PIL Image to load the images and converted to a numpy array then patched a rectangle using matplotlib. It was a jpg image, so there was no way for me to get the dpi from PIL img.info['dpi'], so the accepted solution did not work for me. But after some tinkering I figured out way to save the figure with the same size as the original.
I am adding the following solution here thinking that it will help somebody who had the same issue as mine.
import matplotlib.pyplot as plt
from PIL import Image
import numpy as np
img = Image.open('my_image.jpg') #loading the image
image = np.array(img) #converting it to ndarray
dpi = plt.rcParams['figure.dpi'] #get the default dpi value
fig_size = (img.size[0]/dpi, img.size[1]/dpi) #saving the figure size
fig, ax = plt.subplots(1, figsize=fig_size) #applying figure size
#do whatver you want to do with the figure
fig.tight_layout() #just to be sure
fig.savefig('my_updated_image.jpg') #saving the image
This saved the image with the same resolution as the original image.
In case you are not working with a jupyter notebook. you can get the dpi in the following manner.
figure = plt.figure()
dpi = figure.dpi
To execute 'php' code inside 'html' or 'htm', for 'apache version 2.4.23'
Go to '/etc/apache2/mods-enabled' edit '@mime.conf'
Go to end of file and add the following line:
"AddType application/x-httpd-php .html .htm"
BEFORE tag '< /ifModules >' verified and tested with 'apache 2.4.23' and 'php 5.6.17-1' under 'debian'
You can use querySelectorAll()
like this:
var test = document.querySelectorAll('input[value][type="checkbox"]:not([value=""])');
This translates to:
get all inputs with the attribute "value" and has the attribute "value" that is not blank.
In this demo, it disables the checkbox with a non-blank value.
The proper answer to your question is to use statistics.mean
. But for fun, here is a version of mean that does not use the len()
function, so it (like statistics.mean
) can be used on generators, which do not support len()
:
from functools import reduce
from operator import truediv
def ave(seq):
return truediv(*reduce(lambda a, b: (a[0] + b[1], b[0]),
enumerate(seq, start=1),
(0, 0)))
Static data members declarations in the class declaration are not definition of them.
To define them you should do this in the .CPP
file to avoid duplicated symbols.
The only data you can declare and define is integral static constants.
(Values of enums
can be used as constant values as well)
You might want to rewrite your code as:
class test {
public:
const static unsigned char X = 1;
const static unsigned char Y = 2;
...
test();
};
test::test() {
}
If you want to have ability to modify you static variables (in other words when it is inappropriate to declare them as const), you can separate you code between .H
and .CPP
in the following way:
.H :
class test {
public:
static unsigned char X;
static unsigned char Y;
...
test();
};
.CPP :
unsigned char test::X = 1;
unsigned char test::Y = 2;
test::test()
{
// constructor is empty.
// We don't initialize static data member here,
// because static data initialization will happen on every constructor call.
}
a='foo'
b='baaz'
a.__add__(b)
out: 'foobaaz'
Easiest way to check if they are authenticated is Request.User.IsAuthenticated
I think (from memory)
I've created a small mapper function:
private getAddressParts(object): Object {
let address = {};
const address_components = object.address_components;
address_components.forEach(element => {
address[element.types[0]] = element.short_name;
});
return address;
}
It's a solution for Angular 4 but I think you'll get the idea.
Usage:
geocoder.geocode({ 'location' : latlng }, (results, status) => {
if (status === google.maps.GeocoderStatus.OK) {
const address = {
formatted_address: results[0].formatted_address,
address_parts: this.getAddressParts(results[0])
};
(....)
}
This way the address
object will be something like this:
address: {
address_parts: {
administrative_area_level_1: "NY",
administrative_area_level_2: "New York County",
country: "US",
locality: "New York",
neighborhood: "Lower Manhattan",
political: "Manhattan",
postal_code: "10038",
route: "Beekman St",
street_number: "90",
},
formatted_address: "90 Beekman St, New York, NY 10038, USA"
}
Hope it helps!
Now, i'm being told that this will terminate the session (or is it all sessions?) in the 15th minute of use, regardless their activity.
No, that's not true. The session-timeout
configures a per session timeout in case of inactivity.
Are these methods equivalent? Should I favour the web.xml config?
The setting in the web.xml is global, it applies to all sessions of a given context. Programatically, you can change this for a particular session.
private void PDFExport(LocalReport report)
{
string[] streamids;
string minetype;
string encod;
string fextension;
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>EMF</OutputFormat>" +
" <PageWidth>8.5in</PageWidth>" +
" <PageHeight>11in</PageHeight>" +
" <MarginTop>0.25in</MarginTop>" +
" <MarginLeft>0.25in</MarginLeft>" +
" <MarginRight>0.25in</MarginRight>" +
" <MarginBottom>0.25in</MarginBottom>" +
"</DeviceInfo>";
Warning[] warnings;
byte[] rpbybe = report.Render("PDF", deviceInfo, out minetype, out encod, out fextension, out streamids,
out warnings);
using(FileStream fs=new FileStream("E:\\newwwfg.pdf",FileMode.Create))
{
fs.Write(rpbybe , 0, rpbybe .Length);
}
}
You can use a heredoc. e.g. from a prompt:
$ sqlplus -s username/password@oracle_instance <<EOF
set feed off
set pages 0
select count(*) from table;
exit
EOF
so sqlplus
will consume everything up to the EOF
marker as stdin.
You can break lines in between parenthesises and braces. Additionally, you can append the backslash character \
to a line to explicitly break it:
x = (tuples_first_value,
second_value)
y = 1 + \
2
Your model is @Messages
, change it to @message
.
To change it like you should use migration:
def change rename_table :old_table_name, :new_table_name end
Of course do not create that file by hand but use rails generator:
rails g migration ChangeMessagesToMessage
That will generate new file with proper timestamp in name in 'db
dir. Then run:
rake db:migrate
And your app should be fine since then.
I feel like consolidating info about Python dictionaries:
data = {}
# OR
data = dict()
data = {'a': 1, 'b': 2, 'c': 3}
# OR
data = dict(a=1, b=2, c=3)
# OR
data = {k: v for k, v in (('a', 1), ('b',2), ('c',3))}
data['a'] = 1 # Updates if 'a' exists, else adds 'a'
# OR
data.update({'a': 1})
# OR
data.update(dict(a=1))
# OR
data.update(a=1)
data.update({'c':3,'d':4}) # Updates 'c' and adds 'd'
The update operator |=
now works for dictionaries:
data |= {'c':3,'d':4}
data3 = {}
data3.update(data) # Modifies data3, not data
data3.update(data2) # Modifies data3, not data2
This uses a new feature called dictionary unpacking.
data = {**data1, **data2, **data3}
The merge operator |
now works for dictionaries:
data = data1 | {'c':3,'d':4}
del data[key] # Removes specific element in a dictionary
data.pop(key) # Removes the key & returns the value
data.clear() # Clears entire dictionary
key in data
for key in data: # Iterates just through the keys, ignoring the values
for key, value in d.items(): # Iterates through the pairs
for key in d.keys(): # Iterates just through key, ignoring the values
for value in d.values(): # Iterates just through value, ignoring the keys
data = dict(zip(list_with_keys, list_with_values))
Check this,i guess this is help you because it's work in my project so once you check this code
if(! Pattern.matches(".*[a-zA-Z]+.*[a-zA-Z]", str1))
{
String not contain only character;
}
else
{
String contain only character;
}
Use wwtd (what would travis do) ruby gem to run tests on your local machine roughly as they would run on travis.
It will recreate the build matrix and run each configuration, great to sanity check setup before pushing.
gem i wwtd
wwtd
You should have to use DateTime.TryParseExact
.
var newDate = DateTime.ParseExact("20111120",
"yyyyMMdd",
CultureInfo.InvariantCulture);
OR
string str = "20111021";
string[] format = {"yyyyMMdd"};
DateTime date;
if (DateTime.TryParseExact(str,
format,
System.Globalization.CultureInfo.InvariantCulture,
System.Globalization.DateTimeStyles.None,
out date))
{
//valid
}
...which seems to be the intended and most portable way
the concept of python urllib is to group the numerous attributes of the request into various managers/directors/contexts... which then process their parts:
import urllib.request, ssl
# to avoid verifying ssl certificates
httpsHa = urllib.request.HTTPSHandler(context= ssl._create_unverified_context())
# setting up realm+urls+user-password auth
# (top_level_url may be sequence, also the complete url, realm None is default)
top_level_url = 'https://ip:port_or_domain'
# of the std managers, this can send user+passwd in one go,
# not after HTTP req->401 sequence
password_mgr = urllib.request.HTTPPasswordMgrWithPriorAuth()
password_mgr.add_password(None, top_level_url, "user", "password", is_authenticated=True)
handler = urllib.request.HTTPBasicAuthHandler(password_mgr)
# create OpenerDirector
opener = urllib.request.build_opener(handler, httpsHa)
url = top_level_url + '/some_url?some_query...'
response = opener.open(url)
print(response.read())
It looks like you want to define Truck as a Class
with properties NumberOfAxles, AxleWeights & AxleSpacings.
This can be defined in a CLASS MODULE (here named clsTrucks)
Option Explicit
Private tID As String
Private tNumberOfAxles As Double
Private tAxleSpacings As Double
Public Property Get truckID() As String
truckID = tID
End Property
Public Property Let truckID(value As String)
tID = value
End Property
Public Property Get truckNumberOfAxles() As Double
truckNumberOfAxles = tNumberOfAxles
End Property
Public Property Let truckNumberOfAxles(value As Double)
tNumberOfAxles = value
End Property
Public Property Get truckAxleSpacings() As Double
truckAxleSpacings = tAxleSpacings
End Property
Public Property Let truckAxleSpacings(value As Double)
tAxleSpacings = value
End Property
then in a MODULE the following defines a new truck and it's properties and adds it to a collection of trucks and then retrieves the collection.
Option Explicit
Public TruckCollection As New Collection
Sub DefineNewTruck()
Dim tempTruck As clsTrucks
Dim i As Long
'Add 5 trucks
For i = 1 To 5
Set tempTruck = New clsTrucks
'Random data
tempTruck.truckID = "Truck" & i
tempTruck.truckAxleSpacings = 13.5 + i
tempTruck.truckNumberOfAxles = 20.5 + i
'tempTruck.truckID is the collection key
TruckCollection.Add tempTruck, tempTruck.truckID
Next i
'retrieve 5 trucks
For i = 1 To 5
'retrieve by collection index
Debug.Print TruckCollection(i).truckAxleSpacings
'retrieve by key
Debug.Print TruckCollection("Truck" & i).truckAxleSpacings
Next i
End Sub
There are several ways of doing this so it really depends on how you intend to use the data as to whether an a class/collection is the best setup or arrays/dictionaries etc.
I have tried several solutions mentioned over web, unfortunately without any success. In my project, I have two interfaces(xml/json) for each service. Adding mex endpoints or binding configurations did not helped at all. But, I have noticed, I get this error only when running project with *.svc.cs or *.config file focused. When I run project with IService.cs file focused (where interfaces are defined), service is added without any errors. This is really strange and in my opinion conclusion is bug in Visual Studio 2013. I reproduced same behaviour on several machines(even on Windows Server machine). Hope this helps someone.
This is similar to the accepted answer, but a little cleaner, in my view:
ImmutableMap.of("key1", val1, "key2", val2, "key3", val3);
There are several variations of the above method, and they are great for making static, unchanging, immutable maps.
try:
git ls-files --error-unmatch <file name>
will exit with 1 if file is not tracked
As akjoshi and Julio say this is about dispatching an Action to update the GUI on the same thread as the GUI item but from the method that is handling the background data. You can see this code in specific form in akjoshi's answer above. This is a general version.
myTextBlock.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Normal,
new Action(delegate()
{
myTextBlock.Text = Convert.ToString(myDataObject.getMeData());
}));
The critical part is to call the dispatcher of your UI object - that ensures you have the correct thread.
From personal experience it seems much easier to create and use the Action inline like this. Declaring it at class level gave me lots of problems with static/non-static contexts.
As @ashishduh mentioned above, using android:autoLink="phone
is also a good solution. But this option comes with one drawback, it doesn't work with all phone number lengths. For instance, a phone number of 11 numbers won't work with this option. The solution is to prefix your phone numbers with the country code.
Example:
08034448845
won't work
but +2348034448845
will
I solved the problem. In Home Ubuntu, I deleted the .gradle folder and downloaded it again. I hope it is useful
SessionFactory sessionFactory = entityManagerFactory.unwrap(SessionFactory.class);
where entityManagerFactory
is an JPA EntityManagerFactory
.
The TXR Language supports regex negation.
$ txr -c '@(repeat)
@{nothede /~hede/}
@(do (put-line nothede))
@(end)' Input
A more complicated example: match all lines that start with a
and end with z
, but do not contain the substring hede
:
$ txr -c '@(repeat)
@{nothede /a.*z&~.*hede.*/}
@(do (put-line nothede))
@(end)' -
az <- echoed
az
abcz <- echoed
abcz
abhederz <- not echoed; contains hede
ahedez <- not echoed; contains hede
ace <- not echoed; does not end in z
ahedz <- echoed
ahedz
Regex negation is not particularly useful on its own but when you also have intersection, things get interesting, since you have a full set of boolean set operations: you can express "the set which matches this, except for things which match that".
Check if you use Proxy.
I've got this problem in Mozilla Firefox, I thought it's some issue related to the Firefox itself. Later I found out that I am using a proxy server. When I unchecked the proxy, everything got fine.
Use object to represent val/var/method to make static. You can use object instead of singleton class also. You can use companion if you wanted to make static inside of a class
object Abc{
fun sum(a: Int, b: Int): Int = a + b
}
If you need to call it from Java:
int z = Abc.INSTANCE.sum(x,y);
In Kotlin, ignore INSTANCE.
json.dumps()
is used to decode JSON dataimport json
# initialize different data
str_data = 'normal string'
int_data = 1
float_data = 1.50
list_data = [str_data, int_data, float_data]
nested_list = [int_data, float_data, list_data]
dictionary = {
'int': int_data,
'str': str_data,
'float': float_data,
'list': list_data,
'nested list': nested_list
}
# convert them to JSON data and then print it
print('String :', json.dumps(str_data))
print('Integer :', json.dumps(int_data))
print('Float :', json.dumps(float_data))
print('List :', json.dumps(list_data))
print('Nested List :', json.dumps(nested_list, indent=4))
print('Dictionary :', json.dumps(dictionary, indent=4)) # the json data will be indented
output:
String : "normal string"
Integer : 1
Float : 1.5
List : ["normal string", 1, 1.5]
Nested List : [
1,
1.5,
[
"normal string",
1,
1.5
]
]
Dictionary : {
"int": 1,
"str": "normal string",
"float": 1.5,
"list": [
"normal string",
1,
1.5
],
"nested list": [
1,
1.5,
[
"normal string",
1,
1.5
]
]
}
| Python | JSON |
|:--------------------------------------:|:------:|
| dict | object |
| list, tuple | array |
| str | string |
| int, float, int- & float-derived Enums | number |
| True | true |
| False | false |
| None | null |
json.loads()
is used to convert JSON data into Python data.import json
# initialize different JSON data
arrayJson = '[1, 1.5, ["normal string", 1, 1.5]]'
objectJson = '{"a":1, "b":1.5 , "c":["normal string", 1, 1.5]}'
# convert them to Python Data
list_data = json.loads(arrayJson)
dictionary = json.loads(objectJson)
print('arrayJson to list_data :\n', list_data)
print('\nAccessing the list data :')
print('list_data[2:] =', list_data[2:])
print('list_data[:1] =', list_data[:1])
print('\nobjectJson to dictionary :\n', dictionary)
print('\nAccessing the dictionary :')
print('dictionary[\'a\'] =', dictionary['a'])
print('dictionary[\'c\'] =', dictionary['c'])
output:
arrayJson to list_data :
[1, 1.5, ['normal string', 1, 1.5]]
Accessing the list data :
list_data[2:] = [['normal string', 1, 1.5]]
list_data[:1] = [1]
objectJson to dictionary :
{'a': 1, 'b': 1.5, 'c': ['normal string', 1, 1.5]}
Accessing the dictionary :
dictionary['a'] = 1
dictionary['c'] = ['normal string', 1, 1.5]
| JSON | Python |
|:-------------:|:------:|
| object | dict |
| array | list |
| string | str |
| number (int) | int |
| number (real) | float |
| true | True |
| false | False |
For dict, just use
if key in dict
and don't use searching in key list
if key in dict.keys()
The latter will be more time-consuming.
Steps to install curl in windows
Install cURL on Windows
There are 4 steps to follow to get cURL installed on Windows.
Step 1 and Step 2 is to install SSL library. Step 3 is to install cURL. Step 4 is to install a recent certificate
Step One: Install Visual C++ 2008 Redistributables
From https://www.microsoft.com/en-za/download/details.aspx?id=29 For 64bit systems Visual C++ 2008 Redistributables (x64) For 32bit systems Visual C++ 2008 Redistributables (x32)
Step Two: Install Win(32/64) OpenSSL v1.0.0k Light
From http://www.shininglightpro.com/products/Win32OpenSSL.html For 64bit systems Win64 OpenSSL v1.0.0k Light For 32bit systems Win32 OpenSSL v1.0.0k Light
Step Three: Install cURL
Depending on if your system is 32 or 64 bit, download the corresponding** curl.exe.** For example, go to the Win64 - Generic section and download the Win64 binary with SSL support (the one where SSL is not crossed out). Visit http://curl.haxx.se/download.html
Copy curl.exe to C:\Windows\System32
Step Four: Install Recent Certificates
Do not skip this step. Download a recent copy of valid CERT files from https://curl.haxx.se/ca/cacert.pem Copy it to the same folder as you placed curl.exe (C:\Windows\System32) and rename it as curl-ca-bundle.crt
If you have already installed curl
or after doing the above steps, add the directory where it's installed to the windows path:
1 - From the Desktop, right-click My Computer and click Properties.
2 - Click Advanced System Settings .
3 - In the System Properties window click the Environment Variables button.
4 - Select Path and click Edit.
5 - Append ;c:\path to curl directory at the end.
5 - Click OK.
6 - Close and re-open the command prompt
String start_dt = "2011-01-01"; // Input String
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); // Existing Pattern
Date getStartDt = formatter.parse(start_dt); //Returns Date Format according to existing pattern
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("MM-dd-yyyy");// New Pattern
String formattedDate = simpleDateFormat.format(getStartDt); // Format given String to new pattern
System.out.println(formattedDate); //outputs: 01-01-2011
You can also plot to a png file using gnuplot (which is free):
terminal commands
gnuplot> set title '<title>'
gnuplot> set ylabel '<yLabel>'
gnuplot> set xlabel '<xLabel>'
gnuplot> set grid
gnuplot> set term png
gnuplot> set output '<Output file name>.png'
gnuplot> plot '<fromfile.csv>'
note: you always need to give the right extension (.png here) at set output
Then it is also possible that the ouput is not lines, because your data is not continues. To fix this simply change the 'plot' line to:
plot '<Fromfile.csv>' with line lt -1 lw 2
More line editing options (dashes and line color ect.) at: http://gnuplot.sourceforge.net/demo_canvas/dashcolor.html
apt-get install gnuplot
)brew install gnuplot
)@Test
public void testToStringToMap() {
Map<String,String> expected = new HashMap<>();
expected.put("first_name", "naresh");
expected.put("last_name", "kumar");
expected.put("gender", "male");
String mapString = expected.toString();
Map<String, String> actual = Arrays.stream(mapString.replace("{", "").replace("}", "").split(","))
.map(arrayData-> arrayData.split("="))
.collect(Collectors.toMap(d-> ((String)d[0]).trim(), d-> (String)d[1]));
expected.entrySet().stream().forEach(e->assertTrue(actual.get(e.getKey()).equals(e.getValue())));
}
static public string GetCountry()
{
return new WebClient().DownloadString("http://api.hostip.info/country.php");
}
Usage:
Console.WriteLine(GetCountry()); // will return short code for your country
static public string GetInfo()
{
return new WebClient().DownloadString("http://api.hostip.info/get_json.php");
}
Usage:
Console.WriteLine(GetInfo());
// Example:
// {
// "country_name":"COUNTRY NAME",
// "country_code":"COUNTRY CODE",
// "city":"City",
// "ip":"XX.XXX.XX.XXX"
// }
This is a tad old (OK, it's VERY old), but I'm doing the exact same thing right now. Here's a very simple solution that's working for me:
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool AllocConsole();
[DllImport("kernel32.dll")]
static extern IntPtr GetConsoleWindow();
[DllImport("user32.dll")]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
const int SW_HIDE = 0;
const int SW_SHOW = 5;
public static void ShowConsoleWindow()
{
var handle = GetConsoleWindow();
if (handle == IntPtr.Zero)
{
AllocConsole();
}
else
{
ShowWindow(handle, SW_SHOW);
}
}
public static void HideConsoleWindow()
{
var handle = GetConsoleWindow();
ShowWindow(handle, SW_HIDE);
}
Try something like this:
$txt = "user id date";
$myfile = file_put_contents('logs.txt', $txt.PHP_EOL , FILE_APPEND | LOCK_EX);
...
WHERE table1.x LIKE table2.y + '%'
<script type="text/javascript">
$(window).on('load',function(){
setTimeout(function(){ alert(" //show popup"); }, 5000);
});
</script>
Related with the answer by @DanielSerrano, I've been recently bit by localization of the sc.exe
command, namely in Spanish. My proposal is to pin-point the line and token which holds numerical service state and interpret it, which should be much more robust:
@echo off
rem TODO: change to the desired service name
set TARGET_SERVICE=w32time
set SERVICE_STATE=
rem Surgically target third line, as some locales (such as Spanish) translated the utility's output
for /F "skip=3 tokens=3" %%i in ('""%windir%\system32\sc.exe" query "%TARGET_SERVICE%" 2>nul"') do (
if not defined SERVICE_STATE set SERVICE_STATE=%%i
)
rem Process result
if not defined SERVICE_STATE (
echo ERROR: could not obtain service state!
) else (
rem NOTE: values correspond to "SERVICE_STATUS.dwCurrentState"
rem https://msdn.microsoft.com/en-us/library/windows/desktop/ms685996(v=vs.85).aspx
if not %SERVICE_STATE%==4 (
echo WARNING: service is not running
rem TODO: perform desired operation
rem net start "%TARGET_SERVICE%"
) else (
echo INFORMATION: service is running
)
)
Tested with:
For SQLite3 c++ :
void GetTableColNames( tstring sTableName , std::vector<tstring> *pvsCols )
{
UASSERT(pvsCols);
CppSQLite3Table table1;
tstring sDML = StringOps::std_sprintf(_T("SELECT * FROM %s") , sTableName.c_str() );
table1 = getTable( StringOps::tstringToUTF8string(sDML).c_str() );
for ( int nCol = 0 ; nCol < table1.numFields() ; nCol++ )
{
const char* pch1 = table1.fieldName(nCol);
pvsCols->push_back( StringOps::UTF8charTo_tstring(pch1));
}
}
bool ColExists( tstring sColName )
{
bool bColExists = true;
try
{
tstring sQuery = StringOps::std_sprintf(_T("SELECT %s FROM MyOriginalTable LIMIT 1;") , sColName.c_str() );
ShowVerbalMessages(false);
CppSQLite3Query q = execQuery( StringOps::tstringTo_stdString(sQuery).c_str() );
ShowVerbalMessages(true);
}
catch (CppSQLite3Exception& e)
{
bColExists = false;
}
return bColExists;
}
void DeleteColumns( std::vector<tstring> *pvsColsToDelete )
{
UASSERT(pvsColsToDelete);
execDML( StringOps::tstringTo_stdString(_T("begin transaction;")).c_str() );
std::vector<tstring> vsCols;
GetTableColNames( _T("MyOriginalTable") , &vsCols );
CreateFields( _T("TempTable1") , false );
tstring sFieldNamesSeperatedByCommas;
for ( int nCol = 0 ; nCol < vsCols.size() ; nCol++ )
{
tstring sColNameCurr = vsCols.at(nCol);
bool bUseCol = true;
for ( int nColsToDelete = 0; nColsToDelete < pvsColsToDelete->size() ; nColsToDelete++ )
{
if ( pvsColsToDelete->at(nColsToDelete) == sColNameCurr )
{
bUseCol = false;
break;
}
}
if ( bUseCol )
sFieldNamesSeperatedByCommas+= (sColNameCurr + _T(","));
}
if ( sFieldNamesSeperatedByCommas.at( int(sFieldNamesSeperatedByCommas.size()) - 1) == _T(','))
sFieldNamesSeperatedByCommas.erase( int(sFieldNamesSeperatedByCommas.size()) - 1 );
tstring sDML;
sDML = StringOps::std_sprintf(_T("insert into TempTable1 SELECT %s FROM MyOriginalTable;\n") , sFieldNamesSeperatedByCommas.c_str() );
execDML( StringOps::tstringTo_stdString(sDML).c_str() );
sDML = StringOps::std_sprintf(_T("ALTER TABLE MyOriginalTable RENAME TO MyOriginalTable_old\n") );
execDML( StringOps::tstringTo_stdString(sDML).c_str() );
sDML = StringOps::std_sprintf(_T("ALTER TABLE TempTable1 RENAME TO MyOriginalTable\n") );
execDML( StringOps::tstringTo_stdString(sDML).c_str() );
sDML = ( _T("DROP TABLE MyOriginalTable_old;") );
execDML( StringOps::tstringTo_stdString(sDML).c_str() );
execDML( StringOps::tstringTo_stdString(_T("commit transaction;")).c_str() );
}
Try like below
select
split.field(column_name,1,',','"') name1,
split.field(column_name,2,',','"') name2
from table_name
I have seen this question very often in the web and in my opinion, many people with high reputation did not answer these questions properly. So I would like to express my own answer here.
First we should consider there is a difference between array
and arraylist
.
The question asks for adding an element to an array, and not ArrayList
The answer is quite simple. It can be done in 3 steps.
Here is the simple picture of it
And finally here is the code:
Step 1:
public List<String> convertArrayToList(String[] array){
List<String> stringList = new ArrayList<String>(Arrays.asList(array));
return stringList;
}
Step 2:
public List<String> addToList(String element,List<String> list){
list.add(element);
return list;
}
Step 3:
public String[] convertListToArray(List<String> list){
String[] ins = (String[])list.toArray(new String[list.size()]);
return ins;
}
Step 4
public String[] addNewItemToArray(String element,String [] array){
List<String> list = convertArrayToList(array);
list= addToList(element,list);
return convertListToArray(list);
}
TL;DR: You should add a JProperty to a JObject. Simple. The index query returns a JValue, so figure out how to get the JProperty instead :)
The accepted answer is not answering the question as it seems. What if I want to specifically add a JProperty after a specific one? First, lets start with terminologies which really had my head worked up.
"name":"value"
.Now, when you query Json item using the index [], you are getting the JToken without the identifier, which might be a JContainer or a JValue (requires casting), but you cannot add anything after it, because it is only a value. You can change it itself, query more deep values, but you cannot add anything after it for example.
What you actually want to get is the property as whole, and then add another property after it as desired. For this, you use JOjbect.Property("name")
, and then create another JProperty of your desire and then add it after this using AddAfterSelf
method. You are done then.
For more info: http://www.newtonsoft.com/json/help/html/ModifyJson.htm
This is the code I modified.
public class Program
{
public static void Main()
{
try
{
string jsonText = @"
{
""food"": {
""fruit"": {
""apple"": {
""colour"": ""red"",
""size"": ""small""
},
""orange"": {
""colour"": ""orange"",
""size"": ""large""
}
}
}
}";
var foodJsonObj = JObject.Parse(jsonText);
var bananaJson = JObject.Parse(@"{ ""banana"" : { ""colour"": ""yellow"", ""size"": ""medium""}}");
var fruitJObject = foodJsonObj["food"]["fruit"] as JObject;
fruitJObject.Property("orange").AddAfterSelf(new JProperty("banana", fruitJObject));
Console.WriteLine(foodJsonObj.ToString());
}
catch (Exception ex)
{
Console.WriteLine(ex.GetType().Name + ": " + ex.Message);
}
}
}
The Official Documentation is clear about Path
.
Linux Syntax: /home/joe/foo
Windows Syntax: C:\home\joe\foo
Note: joe
is your username for these examples.
You miss the from
clause
SELECT * from TCCAWZTXD.TCC_COIL_DEMODATA WHERE CURRENT_INSERTTIME BETWEEN(CURRENT_TIMESTAMP)-5 minutes AND CURRENT_TIMESTAMP
I see 2 easy options:
gradient option:
html {
min-height:100%;
background:linear-gradient(0deg, rgba(255, 0, 150, 0.3), rgba(255, 0, 150, 0.3)), url(http://lorempixel.com/800/600/nature/2);
background-size:cover;
}
shadow option:
html {
min-height:100%;
background:url(http://lorempixel.com/800/600/nature/2);
background-size:cover;
box-shadow:inset 0 0 0 2000px rgba(255, 0, 150, 0.3);
}
an old codepen of mine with few examples
a third option
The
background-blend-mode
CSS property sets how an element's background images should blend with each other and with the element's background color.
html {
min-height:100%;
background:url(http://lorempixel.com/800/600/nature/2) rgba(255, 0, 150, 0.3);
background-size:cover;
background-blend-mode: multiply;
}
module.exports = { ClientIDUnsplash : 'SuperSecretKey' };
var { ClientIDUnsplash } = require('./FileOne');
This example works best for React.
Try the following, none of the above solved it for me
Select "Run as administrator"
Then click on the big left box next to Apache
And Choose to uninstall Apache
I have no idea why this worked but it solved my problem directly!
This is a silly mistake, and a different answer compared to the others, but I'll add it because it happened to me.
If you use WSL (linux bash on windows) to manage your laravel application, while using your windows apache to run your server, then running any caching commands in the wsl will store the linux path rather than the windows path to the sessions and other folders.
Simply run the cache clearing commands in the powershell, rather than in WSL.
$ php artisan optimize
Was enough for me.
Tested for PHP 5.3
As i see here, Anonymous Function could help you: http://php.net/manual/en/functions.anonymous.php
What you'll probably need and it's not said before it's how to pass a function without wrapping it inside a on-the-fly-created function. As you'll see later, you'll need to pass the function's name written in a string as a parameter, check its "callability" and then call it.
The function to do check:
if( is_callable( $string_function_name ) ){
/*perform the call*/
}
Then, to call it, use this piece of code (if you need parameters also, put them on an array), seen at : http://php.net/manual/en/function.call-user-func.php
call_user_func_array( "string_holding_the_name_of_your_function", $arrayOfParameters );
as it follows (in a similar, parameterless, way):
function funToBeCalled(){
print("----------------------i'm here");
}
function wrapCaller($fun){
if( is_callable($fun)){
print("called");
call_user_func($fun);
}else{
print($fun." not called");
}
}
wrapCaller("funToBeCalled");
wrapCaller("cannot call me");
Here's a class explaining how to do something similar :
<?php
class HolderValuesOrFunctionsAsString{
private $functions = array();
private $vars = array();
function __set($name,$data){
if(is_callable($data))
$this->functions[$name] = $data;
else
$this->vars[$name] = $data;
}
function __get($name){
$t = $this->vars[$name];
if(isset($t))
return $t;
else{
$t = $this->$functions[$name];
if( isset($t))
return $t;
}
}
function __call($method,$args=null){
$fun = $this->functions[$method];
if(isset($fun)){
call_user_func_array($fun,$args);
} else {
// error out
print("ERROR: Funciton not found: ". $method);
}
}
}
?>
and an example of usage
<?php
/*create a sample function*/
function sayHello($some = "all"){
?>
<br>hello to <?=$some?><br>
<?php
}
$obj = new HolderValuesOrFunctionsAsString;
/*do the assignement*/
$obj->justPrintSomething = 'sayHello'; /*note that the given
"sayHello" it's a string ! */
/*now call it*/
$obj->justPrintSomething(); /*will print: "hello to all" and
a break-line, for html purpose*/
/*if the string assigned is not denoting a defined method
, it's treat as a simple value*/
$obj->justPrintSomething = 'thisFunctionJustNotExistsLOL';
echo $obj->justPrintSomething; /*what do you expect to print?
just that string*/
/*N.B.: "justPrintSomething" is treated as a variable now!
as the __set 's override specify"*/
/*after the assignement, the what is the function's destiny assigned before ? It still works, because it's held on a different array*/
$obj->justPrintSomething("Jack Sparrow");
/*You can use that "variable", ie "justPrintSomething", in both ways !! so you can call "justPrintSomething" passing itself as a parameter*/
$obj->justPrintSomething( $obj->justPrintSomething );
/*prints: "hello to thisFunctionJustNotExistsLOL" and a break-line*/
/*in fact, "justPrintSomething" it's a name used to identify both
a value (into the dictionary of values) or a function-name
(into the dictionary of functions)*/
?>
Use WinSCP for file transfer over SSH, putty is only for SSH commands.
Since you're using jQuery, you just need to attach to some specific events and some pre defined animations:
$('#cat').hover(function()
{
// Mouse Over Callback
}, function()
{
// Mouse Leave callback
});
Then, to do the animation, you simply need to call the fadeOut / fadeIn animations:
$('#dog').fadeOut(750 /* Animation Time */, function()
{
// animation complete callback
$('#cat').fadeIn(750);
});
Combining the two together, you would simply insert the animations in the hover callbacks (something like so, use this as a reference point):
$('#cat').hover(function()
{
if($('#dog').is(':visible'))
$('#dog').fadeOut(750 /* Animation Time */, function()
{
// animation complete callback
$('#cat').fadeIn(750);
});
}, function()
{
// Mouse Leave callback
});
Use with=FALSE
:
cols = paste("V", c(1,2,3,5), sep="")
dt[, !cols, with=FALSE]
I suggest going through the "Introduction to data.table" vignette.
Update: From v1.10.2
onwards, you can also do:
dt[, ..cols]
See the first NEWS item under v1.10.2 here for additional explanation.
Try to use:
location.reload(true);
When this method receives a true
value as argument, it will cause the page to always be reloaded from the server. If it is false or not specified, the browser may reload the page from its cache.
More info:
You can use GNU awk:
$ cat hta
RewriteCond %{HTTP_HOST} !^www\.mysite\.net$
RewriteRule (.*) http://www.mysite.net/$1 [R=301,L]
$ gawk 'match($0, /.*(http.*?)\$/, m) { print m[1]; }' < hta
http://www.mysite.net/
Late reply, but adding that Mongoose also has the concept of Subdocuments
With this syntax, you should be able to reference your userSchema
as a type in your postSchema
like so:
var userSchema = new Schema({
twittername: String,
twitterID: Number,
displayName: String,
profilePic: String,
});
var postSchema = new Schema({
name: String,
postedBy: userSchema,
dateCreated: Date,
comments: [{body:"string", by: mongoose.Schema.Types.ObjectId}],
});
Note the updated postedBy
field with type userSchema
.
This will embed the user object within the post, saving an extra lookup required by using a reference. Sometimes this could be preferable, other times the ref/populate route might be the way to go. Depends on what your application is doing.
You can use it like this: http://plnkr.co/edit/vtNjEgmpItqxX5fdwtPi?p=preview
Like you found, filter
accepts predicate function which accepts item
by item from the array.
So, you just have to create an predicate function based on the given criteria
.
In this example, criteriaMatch
is a function which returns a predicate
function which matches the given criteria
.
template:
<div ng-repeat="item in items | filter:criteriaMatch(criteria)">
{{ item }}
</div>
scope:
$scope.criteriaMatch = function( criteria ) {
return function( item ) {
return item.name === criteria.name;
};
};
There's another important point in constructor chaining: order. Why? Let's say that you have an object being constructed at runtime by a framework that expects it's default constructor. If you want to be able to pass in values while still having the ability to pass in constructor argments when you want, this is extremely useful.
I could for instance have a backing variable that gets set to a default value by my default constructor but has the ability to be overwritten.
public class MyClass
{
private IDependency _myDependency;
MyClass(){ _myDependency = new DefaultDependency(); }
MYClass(IMyDependency dependency) : this() {
_myDependency = dependency; //now our dependency object replaces the defaultDependency
}
}
To help other bug-hunters. I had this error because the function didn't exist.
I had a spelling error.
Your key is a string and your value is an int. Your code won't work because it cannot look up the random int you pass. Also, please provide full code
You can have many java versions in your system.
I think you should add the java 8 in yours JREs installed or edit.
Take a look my screen:
If you click in edit (check your java 8 path):
What I have found best is a CSRF token and save it in the session for links where you need to verify the referrer.
So if you are generating a FB callback then it would look something like this:
$token = uniqid(mt_rand(), TRUE);
$_SESSION['token'] = $token;
$url = "http://example.com/index.php?token={$token}";
Then the index.php will look like this:
if(empty($_GET['token']) || $_GET['token'] !== $_SESSION['token'])
{
show_404();
}
//Continue with the rest of code
I do know of secure sites that do the equivalent of this for all their secure pages.
Havengard's answer doesn't seem to be strictly true. I've found that vw fills the viewport width, but doesn't account for the scrollbars. So, if your content is taller than the viewport (so that your site has a vertical scrollbar), then using vw results in a small horizontal scrollbar. I had to switch out width: 100vw
for width: 100%
to get rid of the horizontal scrollbar.
you also use this:
background-size:contain;
height: 0;
width: 100%;
padding-top: 66,64%;
I don't know your div-values, but let's assume you've got those.
height: auto;
max-width: 600px;
Again, those are just random numbers. It could quite hard to make the background-image (if you would want to) with a fixed width for the div, so better use max-width. And actually it isn't complicated to fill a div with an background-image, just make sure you style the parent element the right way, so the image has a place it can go into.
Chris
Found this on OzGrid courtesy of Mr. Aaron Blood - simple direct and works.
Code:
Cells(1, 3).Copy Cells(1, 1)
Cells(1, 1).Value = Cells(1, 3).Value
However, I kinda suspect you were just providing us with an oversimplified example to ask the question. If you just want to copy formats from one range to another it looks like this...
Code:
Cells(1, 3).Copy
Cells(1, 1).PasteSpecial (xlPasteFormats)
Application.CutCopyMode = False
There are two kinds of cascades in Doctrine:
1) ORM level - uses cascade={"remove"}
in the association - this is a calculation that is done in the UnitOfWork and does not affect the database structure. When you remove an object, the UnitOfWork will iterate over all objects in the association and remove them.
2) Database level - uses onDelete="CASCADE"
on the association's joinColumn - this will add On Delete Cascade to the foreign key column in the database:
@ORM\JoinColumn(name="father_id", referencedColumnName="id", onDelete="CASCADE")
I also want to point out that the way you have your cascade={"remove"} right now, if you delete a Child object, this cascade will remove the Parent object. Clearly not what you want.
You can use the phone alias with Inputmask v3
$('#phone').inputmask({ alias: "phone", "clearIncomplete": true });
$(function() {_x000D_
$('input[type="tel"]').inputmask({ alias: "phone", "clearIncomplete": true });_x000D_
});
_x000D_
<label for="phone">Phone</label>_x000D_
<input name="phone" type="tel">_x000D_
_x000D_
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/inputmask.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/inputmask.extensions.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/inputmask.numeric.extensions.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/inputmask.date.extensions.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/inputmask.phone.extensions.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/jquery.inputmask.js"></script>_x000D_
<script src="https://cdn.jsdelivr.net/gh/RobinHerbots/[email protected]/dist/inputmask/phone-codes/phone.js"></script>
_x000D_
If you're using .NET 3.5, you can use HashSet<T>
. It's true that .NET doesn't cater for sets as well as Java does though.
The Wintellect PowerCollections may help too.
If you want to display at row=159220
row=159220
#To display in a table format
display(res.loc[row:row])
display(res.iloc[row:row+1])
#To display in print format
display(res.loc[row])
display(res.iloc[row])
BrenBarn is correct. The error means you tried to do something like None[5]
. In the backtrace, it says self.imageDef=self.values[2]
, which means that your self.values
is None
.
You should go through all the functions that update self.values
and make sure you account for all the corner cases.
Try this one:
console.log("Session: %j", session);
If the object could be converted into JSON, that will work.
Simple solution would be to use substring method.
Since string is ending with list element, we can use string.length and calculate end index for substring without using lastIndexOf
method
str = str.substring(0, str.length - list[i].length) + "finish"
This is because of the Stacking Context, setting a z-index will make it apply to all children as well.
You could make the two <div>
s siblings instead of descendants.
<div class="absolute"></div>
<div id="relative"></div>
For today's Date
$(document).ready(function() {
$('#textboxname').datepicker();
$('#textboxname').datepicker('setDate', 'today');});
The Interface of Postman is changing acccording to the updates.
So You can get full information about postman can get Here.
Roy Fielding's comment about including a body with a GET request.
Yes. In other words, any HTTP request message is allowed to contain a message body, and thus must parse messages with that in mind. Server semantics for GET, however, are restricted such that a body, if any, has no semantic meaning to the request. The requirements on parsing are separate from the requirements on method semantics.
So, yes, you can send a body with GET, and no, it is never useful to do so.
This is part of the layered design of HTTP/1.1 that will become clear again once the spec is partitioned (work in progress).
....Roy
Yes, you can send a request body with GET but it should not have any meaning. If you give it meaning by parsing it on the server and changing your response based on its contents, then you are ignoring this recommendation in the HTTP/1.1 spec, section 4.3:
...if the request method does not include defined semantics for an entity-body, then the message-body SHOULD be ignored when handling the request.
And the description of the GET method in the HTTP/1.1 spec, section 9.3:
The GET method means retrieve whatever information ([...]) is identified by the Request-URI.
which states that the request-body is not part of the identification of the resource in a GET request, only the request URI.
Update
The RFC2616 referenced as "HTTP/1.1 spec" is now obsolete. In 2014 it was replaced by RFCs 7230-7237. Quote "the message-body SHOULD be ignored when handling the request" has been deleted. It's now just "Request message framing is independent of method semantics, even if the method doesn't define any use for a message body" The 2nd quote "The GET method means retrieve whatever information ... is identified by the Request-URI" was deleted. - From a comment
From the HTTP 1.1 2014 Spec:
A payload within a GET request message has no defined semantics; sending a payload body on a GET request might cause some existing implementations to reject the request.
Python’s raw strings are just a way to tell the Python interpreter that it should interpret backslashes as literal slashes. If you read strings entered by the user, they are already past the point where they could have been raw. Also, user input is most likely read in literally, i.e. “raw”.
This means the interpreting happens somewhere else. But if you know that it happens, why not escape the backslashes for whatever is interpreting it?
s = s.replace("\\", "\\\\")
(Note that you can't do r"\"
as “a raw string cannot end in a single backslash”, but I could have used r"\\"
as well for the second argument.)
If that doesn’t work, your user input is for some arcane reason interpreting the backslashes, so you’ll need a way to tell it to stop that.
I've had a similar requirement: I needed to inject a Spring-managed repository bean into my Person
entity class ("entity" as in "something with an identity", for example an JPA entity). A Person
instance has friends, and for this Person
instance to return its friends, it shall delegate to its repository and query for friends there.
@Entity
public class Person {
private static PersonRepository personRepository;
@Id
@GeneratedValue
private long id;
public static void setPersonRepository(PersonRepository personRepository){
this.personRepository = personRepository;
}
public Set<Person> getFriends(){
return personRepository.getFriends(id);
}
...
}
.
@Repository
public class PersonRepository {
public Person get Person(long id) {
// do database-related stuff
}
public Set<Person> getFriends(long id) {
// do database-related stuff
}
...
}
So how did I inject that PersonRepository
singleton into the static field of the Person
class?
I created a @Configuration
, which gets picked up at Spring ApplicationContext construction time. This @Configuration
gets injected with all those beans that I need to inject as static fields into other classes. Then with a @PostConstruct
annotation, I catch a hook to do all static field injection logic.
@Configuration
public class StaticFieldInjectionConfiguration {
@Inject
private PersonRepository personRepository;
@PostConstruct
private void init() {
Person.setPersonRepository(personRepository);
}
}
Ctrl + . shows the menu. I find this easier to type than the alternative, Alt + Shift + F10.
This can be re-bound to something more familiar by going to Tools > Options > Environment > Keyboard > Visual C# > View.QuickActions
I had the exact same problem, and written a small tool to do the mixing of data and model. See https://github.com/khayll/jsmix
This is how you would do it:
//model object (or whatever you'd like the implementation to be)
var Person = function() {}
Person.prototype.isOld = function() {
return this.age > RETIREMENT_AGE;
}
//then you could say:
var result = JSMix(jsonData).withObject(Person.prototype, "persons").build();
//and use
console.log(result.persons[3].isOld());
It can handle complex objects, like nested collections recursively as well.
As for serializing JS functions, I wouldn't do such thing because of security reasons.
For those who are interested in using react hooks
, this might help you get started.
import React, { useState, useEffect, useRef } from 'react'
export default () => {
const [height, setHeight] = useState(0)
const ref = useRef(null)
useEffect(() => {
setHeight(ref.current.clientHeight)
})
return (
<div ref={ref}>
{height}
</div>
)
}
All output:
scriptname &>/dev/null
Portable:
scriptname >/dev/null 2>&1
Portable:
scriptname >/dev/null 2>/dev/null
For newer bash (no portable):
scriptname &>-
Assuming you have pushed most recent changes to the server:
Once you reopen the project both commits and changes should be zero.
I figured it out!
With almost 2 hours worth of trial and error, i figured it out.
This WORKS and is what you do to pass variables to remote job:
def handle = triggerRemoteJob(remoteJenkinsName: 'remoteJenkins', job: 'RemoteJob' paramters: "param1=${env.PARAM1}\nparam2=${env.param2}")
Use \n to separate two parameters, no spaces..
As opposed to parameters: '''someparams'''
we use paramters: "someparams"
the " ... " is what gets us the values of the desired variables. (These are double quotes, not two single quotes)
the ''' ... ''' or ' ... ' will not get us those values. (Three single quotes or just single quotes)
All parameters here are defined in environment{} block at the start of the pipeline and are modified in stages>steps>scripts wherever necessary.
I also tested and found that when you use " ... " you cannot use something like ''' ... "..." ''' or "... '..'..." or any combination of it...
The catch here is that when you are using "..." in parameters section, you cannot pass a string parameter; for example This WILL NOT WORK:
def handle = triggerRemoteJob(remoteJenkinsName: 'remoteJenkins', job: 'RemoteJob' paramters: "param1=${env.PARAM1}\nparam2='param2'")
if you want to pass something like the one above, you will need to set an environment variable param2='param2' and then use ${env.param2} in the parameters section of remote trigger plugin step
defaultValue instead of value worked for me .
For me / had to be in a new line.
For example
create type emp_t;/
didn't work
but
create type emp_t;
/
worked.
You can specify your own messages in the validate call. Lifting and abbreviating this code from the Remember the Milk signup form used in the Validation plugin documentation (http://jquery.bassistance.de/validate/demo/milk/), you can easily specify your own messages:
var validator = $("#signupform").validate({
rules: {
firstname: "required",
lastname: "required",
username: {
required: true,
minlength: 2,
remote: "users.php"
}
},
messages: {
firstname: "Enter your firstname",
lastname: "Enter your lastname",
username: {
required: "Enter a username",
minlength: jQuery.format("Enter at least {0} characters"),
remote: jQuery.format("{0} is already in use")
}
}
});
The complete API for validate(...) : http://jqueryvalidation.org/validate
You'd have to store couplets of object/value pairs in some internal state:
HashMap = function(){
this._dict = [];
}
HashMap.prototype._get = function(key){
for(var i=0, couplet; couplet = this._dict[i]; i++){
if(couplet[0] === key){
return couplet;
}
}
}
HashMap.prototype.put = function(key, value){
var couplet = this._get(key);
if(couplet){
couplet[1] = value;
}else{
this._dict.push([key, value]);
}
return this; // for chaining
}
HashMap.prototype.get = function(key){
var couplet = this._get(key);
if(couplet){
return couplet[1];
}
}
And use it as such:
var color = {}; // Unique object instance
var shape = {}; // Unique object instance
var map = new HashMap();
map.put(color, "blue");
map.put(shape, "round");
console.log("Item is", map.get(color), "and", map.get(shape));
Of course, this implementation is also somewhere along the lines of O(n). Eugene's examples are the only way to get a hash that works with any sort of speed you'd expect from a real hash.
Another approach, along the lines of Eugene's answer is to somehow attach a unique ID to all objects. One of my favorite approaches is to take one of the built-in methods inherited from the Object superclass, replace it with a custom function passthrough and attach properties to that function object. If you were to rewrite my HashMap method to do this, it would look like:
HashMap = function(){
this._dict = {};
}
HashMap.prototype._shared = {id: 1};
HashMap.prototype.put = function put(key, value){
if(typeof key == "object"){
if(!key.hasOwnProperty._id){
key.hasOwnProperty = function(key){
return Object.prototype.hasOwnProperty.call(this, key);
}
key.hasOwnProperty._id = this._shared.id++;
}
this._dict[key.hasOwnProperty._id] = value;
}else{
this._dict[key] = value;
}
return this; // for chaining
}
HashMap.prototype.get = function get(key){
if(typeof key == "object"){
return this._dict[key.hasOwnProperty._id];
}
return this._dict[key];
}
This version appears to be only slightly faster, but in theory it will be significantly faster for large data sets.
This was a very handy page as I have a requirement to DELETE records from a mySQL table where the expiry date is < Today.
I am on a shared host and CRON did not like the suggestion AndrewKDay. it also said (and I agree) that exposing the password in this way could be insecure.
I then tried turning Events ON in phpMyAdmin but again being on a shared host this was a no no. Sorry fancyPants.
So I turned to embedding the SQL script in a PHP file. I used the example [here][1]
[1]: https://www.w3schools.com/php/php_mysql_create_table.asp stored it in a sub folder somewhere safe and added an empty index.php for good measure. I was then able to test that this PHP file (and my SQL script) was working from the browser URL line.
All good so far. On to CRON. Following the above example almost worked. I ended up calling PHP before the path for my *.php file. Otherwise CRON didn't know what to do with the file.
my cron is set to run once per day and looks like this, modified for security.
00 * * * * php mywebsiteurl.com/wp-content/themes/ForteChildTheme/php/DeleteExpiredAssessment.php
For the final testing with CRON I initially set it to run each minute and had email alerts turned on. This quickly confirmed that it was running as planned and I changed it back to once per day.
Hope this helps.
Dim sFileName As String
Dim iFileNum As Integer
Dim sBuf As String
Dim Fields as String
Dim TempStr as String
sFileName = "c:\fields.ini"
''//Does the file exist?
If Len(Dir$(sFileName)) = 0 Then
MsgBox ("Cannot find fields.ini")
End If
iFileNum = FreeFile()
Open sFileName For Input As iFileNum
''//This part skips the first two lines
if not(EOF(iFileNum)) Then Line Input #iFilenum, TempStr
if not(EOF(iFileNum)) Then Line Input #iFilenum, TempStr
Do While Not EOF(iFileNum)
Line Input #iFileNum, Fields
MsgBox (Fields)
Loop
You are right that this has long since been implemented in .NET Core.
At the time of writing (September 2019), the project.json
file of NuGet 3.x+ has been superseded by PackageReference
(as explained at https://docs.microsoft.com/en-us/nuget/archive/project-json).
To get access to the *Async
methods of the HttpClient
class, your .csproj
file must be correctly configured.
Open your .csproj
file in a plain text editor, and make sure the first line is
<Project Sdk="Microsoft.NET.Sdk.Web">
(as pointed out at https://docs.microsoft.com/en-us/dotnet/core/tools/project-json-to-csproj#the-csproj-format).
To get access to the *Async
methods of the HttpClient
class, you also need to have the correct package reference in your .csproj
file, like so:
<ItemGroup>
<!-- ... -->
<PackageReference Include="Microsoft.AspNetCore.App" />
<!-- ... -->
</ItemGroup>
(See https://docs.microsoft.com/en-us/nuget/consume-packages/package-references-in-project-files#adding-a-packagereference. Also: We recommend applications targeting ASP.NET Core 2.1 and later use the Microsoft.AspNetCore.App metapackage, https://docs.microsoft.com/en-us/aspnet/core/fundamentals/metapackage)
Methods such as PostAsJsonAsync
, ReadAsAsync
, PutAsJsonAsync
and DeleteAsync
should now work out of the box. (No using directive needed.)
Update: The PackageReference tag is no longer needed in .NET Core 3.0.
I don't think there's a recommended order, as long as it compiles! What's annoying is when some headers require other headers to be included first... That's a problem with the headers themselves, not with the order of includes.
My personal preference is to go from local to global, each subsection in alphabetical order, i.e.:
My rationale for 1. is that it should prove that each header (for which there is a cpp) can be #include
d without prerequisites (terminus technicus: header is "self-contained"). And the rest just seems to flow logically from there.
This is how to install a normal MSI file silently:
msiexec.exe /i c:\setup.msi /QN /L*V "C:\Temp\msilog.log"
Quick explanation:
/L*V "C:\Temp\msilog.log"= verbose logging at indicated path
/QN = run completely silently
/i = run install sequence
The msiexec.exe command line is extensive with support for a variety of options. Here is another overview of the same command line interface. Here is an annotated versions (was broken, resurrected via way back machine).
It is also possible to make a batch file a lot shorter with constructs such as for loops as illustrated here for Windows Updates.
If there are check boxes that must be checked during the setup, you must find the appropriate PUBLIC PROPERTIES attached to the check box and set it at the command line like this:
msiexec.exe /i c:\setup.msi /QN /L*V "C:\Temp\msilog.log" STARTAPP=1 SHOWHELP=Yes
These properties are different in each MSI. You can find them via the verbose log file or by opening the MSI in Orca, or another appropriate tool. You must look either in the dialog control section or in the Property table for what the property name is. Try running the setup and create a verbose log file first and then search the log for messages ala "Setting property..." and then see what the property name is there. Then add this property with the value from the log file to the command line.
Also have a look at how to use transforms to customize the MSI beyond setting command line parameters: How to make better use of MSI files
I would use Swing for a couple of reasons.
It has been around longer and has had more development effort applied to it. Hence it is likely more feature complete and (maybe) has fewer bugs.
There is lots of documentation and other guidance on producing performant applications.
If you want to build a very feature-rich application, you might want to check out the NetBeans RCP (Rich Client Platform). There's a learning curve, but you can put together nice applications quickly with a little practice. I don't have enough experience with the Eclipse platform to make a valid judgment.
If you don't want to use the entire RCP, NetBeans also has many useful components that can be pulled out and used independently.
One other word of advice, look into different layout managers. They tripped me up for a long time when I was learning. Some of the best aren't even in the standard library. The MigLayout (for both Swing and SWT) and JGoodies Forms tools are two of the best in my opinion.
SHA isn't encryption, it's a one-way hash function. AES (Advanced_Encryption_Standard) is a symmetric encryption standard.
If you see implementation of both the method, they look same.
String.valueOf(b)
public static String valueOf(boolean b) {
return b ? "true" : "false";
}
Boolean.toString(b)
public static String toString(boolean b) {
return b ? "true" : "false";
}
So both the methods are equally efficient.
document.getElementById('id').value
If you want to pass custom Controller to a form_for while rendering a partial form you can use this:
<%= render 'form', :locals => {:controller => 'my_controller', :action => 'my_action'}%>
and then in the form partial use this local variable like this:
<%= form_for(:post, :url => url_for(:controller => locals[:controller], :action => locals[:action]), html: {class: ""} ) do |f| -%>
This works for large tables:
CREATE Temporary table duplicates AS select max(id) as id, url from links group by url having count(*) > 1;
DELETE l from links l inner join duplicates ld on ld.id = l.id WHERE ld.id IS NOT NULL;
To delete oldest change max(id)
to min(id)